drop da base 🍾

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 4
+end_of_line = lf
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true

.eslintrc

@@ -0,0 +1,14 @@
+{
+    "parser": "babel-eslint",
+    "extends": [
+        "oceanprotocol",
+        "oceanprotocol/react",
+        "plugin:prettier/recommended",
+        "prettier/react",
+        "prettier/standard"
+    ],
+    "plugins": ["prettier"],
+    "rules": {
+        "prettier/prettier": "error"
+    }
+}

.gitignore

@@ -0,0 +1,7 @@
+node_modules
+package-lock.json
+yarn.lock
+yarn-error.log
+.cache
+/public
+.DS_Store

.prettierrc

@@ -0,0 +1,5 @@
+{
+    "semi": false,
+    "singleQuote": true,
+    "trailingComma": "none"
+}

.travis.yml

@@ -0,0 +1,15 @@
+language: node_js
+node_js: node
+
+# will run `npm install` automatically here
+
+script:
+    - npm test
+    - npm run build
+
+notifications:
+    email: false
+
+cache:
+    directories:
+        - node_modules

README.md

@@ -4,6 +4,11 @@
 
 > One site to rule all docs.
 
+[![Build Status](https://travis-ci.com/oceanprotocol/docs.svg?branch=master)](https://travis-ci.com/oceanprotocol/docs)
+[![js oceanprotocol](https://img.shields.io/badge/js-oceanprotocol-7b1173.svg)](https://github.com/oceanprotocol/eslint-config-oceanprotocol)
+[![code style: prettier](https://img.shields.io/badge/code_style-prettier-7b1173.svg?style=flat-square)](https://github.com/prettier/prettier)
+[![Greenkeeper badge](https://badges.greenkeeper.io/oceanprotocol/docs.svg)](https://greenkeeper.io/)
+
 - [Content](#content)
     - [Editing docs](#editing-docs)
     - [Adding docs](#adding-docs)
@@ -15,21 +20,41 @@
 
 ...documentation concept...
 
+The documentation is split in multiple parts whose content lives in this repo:
+
+-   Core concepts: high-level explanation of concepts, assumptions, and components
+-   Setup: getting started for various stakeholders and use cases
+-   Tutorials: detailed tutorials
+
+Additionally, these docs live in their respective repos and are pulled into this site on build time:
+
+-   API reference
+-   Component docs
+
 ### Editing docs
 
 ### Adding docs
 
 ## Development
 
+The site is a React app built with [Gatsby](https://www.gatsbyjs.org), pulling its content from various sources.
+
+To start development, clone this repo, install all dependencies, and start the development server:
+
 ```bash
+git clone git@github.com:oceanprotocol/docs.git
+cd docs/
+
 npm i
 npm start
 ```
 
+This will start a hot-reloading local server exposed under [localhost:8000](http://localhost:8000).
+
 ## Authors
 
-- Troy McConaghy ([@ttmc](https://github.com/ttmc)) - [Ocean Protocol](https://oceanprotocol.com)
+-   Troy McConaghy ([@ttmc](https://github.com/ttmc)) - [Ocean Protocol](https://oceanprotocol.com)
-- Matthias Kretschmann ([@kremalicious](https://github.com/kremalicious)) - [Ocean Protocol](https://oceanprotocol.com)
+-   Matthias Kretschmann ([@kremalicious](https://github.com/kremalicious)) - [Ocean Protocol](https://oceanprotocol.com)
 
 ## License
 

content/coreconcepts/components.md

@@ -0,0 +1,3 @@
+---
+title: The components of Ocean Protocol
+---

content/setup/marketplace.md

@@ -0,0 +1,3 @@
+---
+title: Set up a data marketplace
+---

content/tutorials/jupyter.md

@@ -0,0 +1,5 @@
+---
+title: Use Jupyter notebooks to interact with the Ocean network
+---
+
+How to use Mantaray?

gatsby-browser.js

@@ -0,0 +1,7 @@
+/**
+ * Implement Gatsby's Browser APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/browser-apis/
+ */
+
+// You can delete this file if you're not using it

gatsby-config.js

@@ -0,0 +1,25 @@
+module.exports = {
+    siteMetadata: {
+        title: 'Ocean Protocol Docs'
+    },
+    plugins: [
+        {
+            resolve: 'gatsby-source-filesystem',
+            options: {
+                name: 'images',
+                path: `${__dirname}/src/images`
+            }
+        },
+        {
+            resolve: 'gatsby-source-filesystem',
+            options: {
+                name: 'content',
+                path: `${__dirname}/content`
+            }
+        },
+        'gatsby-plugin-react-helmet',
+        'gatsby-transformer-sharp',
+        'gatsby-plugin-sharp'
+        // 'gatsby-plugin-offline',
+    ]
+}

gatsby-node.js

@@ -0,0 +1,7 @@
+/**
+ * Implement Gatsby's Node APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/node-apis/
+ */
+
+// You can delete this file if you're not using it

gatsby-ssr.js

@@ -0,0 +1,7 @@
+/**
+ * Implement Gatsby's SSR (Server Side Rendering) APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/ssr-apis/
+ */
+
+// You can delete this file if you're not using it

package.json

@@ -0,0 +1,44 @@
+{
+  "name": "@oceanprotocol/docs",
+  "description": "One site to rule all docs",
+  "version": "0.0.1",
+  "author": "Ocean Protocol <devops@oceanprotocol.com>",
+  "dependencies": {
+    "gatsby": "^2.0.19",
+    "gatsby-image": "^2.0.15",
+    "gatsby-plugin-manifest": "^2.0.5",
+    "gatsby-plugin-offline": "^2.0.11",
+    "gatsby-plugin-react-helmet": "^3.0.0",
+    "gatsby-plugin-sharp": "^2.0.7",
+    "gatsby-source-filesystem": "^2.0.4",
+    "gatsby-transformer-sharp": "^2.1.4",
+    "react": "^16.5.1",
+    "react-dom": "^16.5.1",
+    "react-helmet": "^5.2.0"
+  },
+  "license": "Apache-2.0",
+  "scripts": {
+    "build": "gatsby build",
+    "start": "gatsby develop",
+    "ssr": "npm run build && serve -s public/",
+    "format": "prettier --write 'src/**/*.{js,jsx}'",
+    "test": "eslint --ext .js,.jsx ."
+  },
+  "devDependencies": {
+    "eslint": "^5.8.0",
+    "eslint-config-oceanprotocol": "^1.3.0",
+    "eslint-config-prettier": "^3.1.0",
+    "eslint-plugin-prettier": "^3.0.0",
+    "prettier": "^1.14.2"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/oceanprotocol/docs"
+  },
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
+}

src/components/header.js

@@ -0,0 +1,17 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import { Link } from 'gatsby'
+
+const Header = ({ siteTitle }) => (
+    <header>
+        <h1 style={{ margin: 0 }}>
+            <Link to="/">{siteTitle}</Link>
+        </h1>
+    </header>
+)
+
+Header.propTypes = {
+    siteTitle: PropTypes.string
+}
+
+export default Header

src/components/image.js

@@ -0,0 +1,36 @@
+import React from 'react'
+import { StaticQuery, graphql } from 'gatsby'
+import Img from 'gatsby-image'
+
+/*
+ * This component is built using `gatsby-image` to automatically serve optimized
+ * images with lazy loading and reduced file sizes. The image is loaded using a
+ * `StaticQuery`, which allows us to load the image from directly within this
+ * component, rather than having to pass the image data down from pages.
+ *
+ * For more information, see the docs:
+ * - `gatsby-image`: https://gatsby.app/gatsby-image
+ * - `StaticQuery`: https://gatsby.app/staticquery
+ */
+
+const Image = () => (
+    <StaticQuery
+        query={graphql`
+            query {
+                placeholderImage: file(
+                    relativePath: { eq: "gatsby-astronaut.png" }
+                ) {
+                    childImageSharp {
+                        fluid(maxWidth: 300) {
+                            ...GatsbyImageSharpFluid
+                        }
+                    }
+                }
+            }
+        `}
+        render={data => (
+            <Img fluid={data.placeholderImage.childImageSharp.fluid} />
+        )}
+    />
+)
+export default Image

src/components/layout.css

@@ -0,0 +1,624 @@
+html {
+  font-family: sans-serif;
+  -ms-text-size-adjust: 100%;
+  -webkit-text-size-adjust: 100%;
+}
+body {
+  margin: 0;
+}
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+main,
+menu,
+nav,
+section,
+summary {
+  display: block;
+}
+audio,
+canvas,
+progress,
+video {
+  display: inline-block;
+}
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+progress {
+  vertical-align: baseline;
+}
+[hidden],
+template {
+  display: none;
+}
+a {
+  background-color: transparent;
+  -webkit-text-decoration-skip: objects;
+}
+a:active,
+a:hover {
+  outline-width: 0;
+}
+abbr[title] {
+  border-bottom: none;
+  text-decoration: underline;
+  text-decoration: underline dotted;
+}
+b,
+strong {
+  font-weight: inherit;
+  font-weight: bolder;
+}
+dfn {
+  font-style: italic;
+}
+h1 {
+  font-size: 2em;
+  margin: .67em 0;
+}
+mark {
+  background-color: #ff0;
+  color: #000;
+}
+small {
+  font-size: 80%;
+}
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+sub {
+  bottom: -.25em;
+}
+sup {
+  top: -.5em;
+}
+img {
+  border-style: none;
+}
+svg:not(:root) {
+  overflow: hidden;
+}
+code,
+kbd,
+pre,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+figure {
+  margin: 1em 40px;
+}
+hr {
+  box-sizing: content-box;
+  height: 0;
+  overflow: visible;
+}
+button,
+input,
+optgroup,
+select,
+textarea {
+  font: inherit;
+  margin: 0;
+}
+optgroup {
+  font-weight: 700;
+}
+button,
+input {
+  overflow: visible;
+}
+button,
+select {
+  text-transform: none;
+}
+[type=reset],
+[type=submit],
+button,
+html [type=button] {
+  -webkit-appearance: button;
+}
+[type=button]::-moz-focus-inner,
+[type=reset]::-moz-focus-inner,
+[type=submit]::-moz-focus-inner,
+button::-moz-focus-inner {
+  border-style: none;
+  padding: 0;
+}
+[type=button]:-moz-focusring,
+[type=reset]:-moz-focusring,
+[type=submit]:-moz-focusring,
+button:-moz-focusring {
+  outline: 1px dotted ButtonText;
+}
+fieldset {
+  border: 1px solid silver;
+  margin: 0 2px;
+  padding: .35em .625em .75em;
+}
+legend {
+  box-sizing: border-box;
+  color: inherit;
+  display: table;
+  max-width: 100%;
+  padding: 0;
+  white-space: normal;
+}
+textarea {
+  overflow: auto;
+}
+[type=checkbox],
+[type=radio] {
+  box-sizing: border-box;
+  padding: 0;
+}
+[type=number]::-webkit-inner-spin-button,
+[type=number]::-webkit-outer-spin-button {
+  height: auto;
+}
+[type=search] {
+  -webkit-appearance: textfield;
+  outline-offset: -2px;
+}
+[type=search]::-webkit-search-cancel-button,
+[type=search]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+::-webkit-input-placeholder {
+  color: inherit;
+  opacity: .54;
+}
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  font: inherit;
+}
+html {
+  font: 112.5%/1.45em georgia, serif;
+  box-sizing: border-box;
+  overflow-y: scroll;
+}
+* {
+  box-sizing: inherit;
+}
+*:before {
+  box-sizing: inherit;
+}
+*:after {
+  box-sizing: inherit;
+}
+body {
+  color: hsla(0, 0%, 0%, 0.8);
+  font-family: georgia, serif;
+  font-weight: normal;
+  word-wrap: break-word;
+  font-kerning: normal;
+  -moz-font-feature-settings: "kern", "liga", "clig", "calt";
+  -ms-font-feature-settings: "kern", "liga", "clig", "calt";
+  -webkit-font-feature-settings: "kern", "liga", "clig", "calt";
+  font-feature-settings: "kern", "liga", "clig", "calt";
+}
+img {
+  max-width: 100%;
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+h1 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 2.25rem;
+  line-height: 1.1;
+}
+h2 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 1.62671rem;
+  line-height: 1.1;
+}
+h3 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 1.38316rem;
+  line-height: 1.1;
+}
+h4 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 1rem;
+  line-height: 1.1;
+}
+h5 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 0.85028rem;
+  line-height: 1.1;
+}
+h6 {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  color: inherit;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+  font-weight: bold;
+  text-rendering: optimizeLegibility;
+  font-size: 0.78405rem;
+  line-height: 1.1;
+}
+hgroup {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+ul {
+  margin-left: 1.45rem;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  list-style-position: outside;
+  list-style-image: none;
+}
+ol {
+  margin-left: 1.45rem;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  list-style-position: outside;
+  list-style-image: none;
+}
+dl {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+dd {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+p {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+figure {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+pre {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  font-size: 0.85rem;
+  line-height: 1.42;
+  background: hsla(0, 0%, 0%, 0.04);
+  border-radius: 3px;
+  overflow: auto;
+  word-wrap: normal;
+  padding: 1.45rem;
+}
+table {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+  font-size: 1rem;
+  line-height: 1.45rem;
+  border-collapse: collapse;
+  width: 100%;
+}
+fieldset {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+blockquote {
+  margin-left: 1.45rem;
+  margin-right: 1.45rem;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+form {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+noscript {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+iframe {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+hr {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: calc(1.45rem - 1px);
+  background: hsla(0, 0%, 0%, 0.2);
+  border: none;
+  height: 1px;
+}
+address {
+  margin-left: 0;
+  margin-right: 0;
+  margin-top: 0;
+  padding-bottom: 0;
+  padding-left: 0;
+  padding-right: 0;
+  padding-top: 0;
+  margin-bottom: 1.45rem;
+}
+b {
+  font-weight: bold;
+}
+strong {
+  font-weight: bold;
+}
+dt {
+  font-weight: bold;
+}
+th {
+  font-weight: bold;
+}
+li {
+  margin-bottom: calc(1.45rem / 2);
+}
+ol li {
+  padding-left: 0;
+}
+ul li {
+  padding-left: 0;
+}
+li > ol {
+  margin-left: 1.45rem;
+  margin-bottom: calc(1.45rem / 2);
+  margin-top: calc(1.45rem / 2);
+}
+li > ul {
+  margin-left: 1.45rem;
+  margin-bottom: calc(1.45rem / 2);
+  margin-top: calc(1.45rem / 2);
+}
+blockquote *:last-child {
+  margin-bottom: 0;
+}
+li *:last-child {
+  margin-bottom: 0;
+}
+p *:last-child {
+  margin-bottom: 0;
+}
+li > p {
+  margin-bottom: calc(1.45rem / 2);
+}
+code {
+  font-size: 0.85rem;
+  line-height: 1.45rem;
+}
+kbd {
+  font-size: 0.85rem;
+  line-height: 1.45rem;
+}
+samp {
+  font-size: 0.85rem;
+  line-height: 1.45rem;
+}
+abbr {
+  border-bottom: 1px dotted hsla(0, 0%, 0%, 0.5);
+  cursor: help;
+}
+acronym {
+  border-bottom: 1px dotted hsla(0, 0%, 0%, 0.5);
+  cursor: help;
+}
+abbr[title] {
+  border-bottom: 1px dotted hsla(0, 0%, 0%, 0.5);
+  cursor: help;
+  text-decoration: none;
+}
+thead {
+  text-align: left;
+}
+td,
+th {
+  text-align: left;
+  border-bottom: 1px solid hsla(0, 0%, 0%, 0.12);
+  font-feature-settings: "tnum";
+  -moz-font-feature-settings: "tnum";
+  -ms-font-feature-settings: "tnum";
+  -webkit-font-feature-settings: "tnum";
+  padding-left: 0.96667rem;
+  padding-right: 0.96667rem;
+  padding-top: 0.725rem;
+  padding-bottom: calc(0.725rem - 1px);
+}
+th:first-child,
+td:first-child {
+  padding-left: 0;
+}
+th:last-child,
+td:last-child {
+  padding-right: 0;
+}
+tt,
+code {
+  background-color: hsla(0, 0%, 0%, 0.04);
+  border-radius: 3px;
+  font-family: "SFMono-Regular", Consolas, "Roboto Mono", "Droid Sans Mono",
+    "Liberation Mono", Menlo, Courier, monospace;
+  padding: 0;
+  padding-top: 0.2em;
+  padding-bottom: 0.2em;
+}
+pre code {
+  background: none;
+  line-height: 1.42;
+}
+code:before,
+code:after,
+tt:before,
+tt:after {
+  letter-spacing: -0.2em;
+  content: " ";
+}
+pre code:before,
+pre code:after,
+pre tt:before,
+pre tt:after {
+  content: "";
+}
+@media only screen and (max-width: 480px) {
+  html {
+    font-size: 100%;
+  }
+}

src/components/layout.js

@@ -0,0 +1,42 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import Helmet from 'react-helmet'
+import { StaticQuery, graphql } from 'gatsby'
+
+import Header from './header'
+import './layout.css'
+
+const Layout = ({ children }) => (
+    <StaticQuery
+        query={graphql`
+            query SiteTitleQuery {
+                site {
+                    siteMetadata {
+                        title
+                    }
+                }
+            }
+        `}
+        render={data => (
+            <>
+                <Helmet
+                    title={data.site.siteMetadata.title}
+                    meta={[
+                        { name: 'description', content: 'Sample' },
+                        { name: 'keywords', content: 'sample, something' }
+                    ]}
+                >
+                    <html lang="en" />
+                </Helmet>
+                <Header siteTitle={data.site.siteMetadata.title} />
+                <div>{children}</div>
+            </>
+        )}
+    />
+)
+
+Layout.propTypes = {
+    children: PropTypes.node.isRequired
+}
+
+export default Layout

src/pages/404.js

@@ -0,0 +1,11 @@
+import React from 'react'
+import Layout from '../components/layout'
+
+const NotFoundPage = () => (
+    <Layout>
+        <h1>NOT FOUND</h1>
+        <p>You just hit a route that doesn&#39;t exist... the sadness.</p>
+    </Layout>
+)
+
+export default NotFoundPage

src/pages/index.js

@@ -0,0 +1,17 @@
+import React from 'react'
+import { Link } from 'gatsby'
+
+import Layout from '../components/layout'
+import Image from '../components/image'
+
+const IndexPage = () => (
+    <Layout>
+        <h1>Hi people</h1>
+        <p>Welcome to your new Gatsby site.</p>
+        <p>Now go build something great.</p>
+        <Image />
+        <Link to="/page-2/">Go to page 2</Link>
+    </Layout>
+)
+
+export default IndexPage

src/pages/page-2.js

@@ -0,0 +1,14 @@
+import React from 'react'
+import { Link } from 'gatsby'
+
+import Layout from '../components/layout'
+
+const SecondPage = () => (
+    <Layout>
+        <h1>Hi from the second page</h1>
+        <p>Welcome to page 2</p>
+        <Link to="/">Go back to the homepage</Link>
+    </Layout>
+)
+
+export default SecondPage