create redirects for root of sections

* ref #32

config.js

@@ -18,5 +18,19 @@ module.exports = {
     githubContentPath:
         'https://github.com/oceanprotocol/docs/blob/master/content',
     githubDevOceanPath:
-        'https://github.com/oceanprotocol/dev-ocean/blob/master/doc'
+        'https://github.com/oceanprotocol/dev-ocean/blob/master/doc',
+    redirects: [
+        {
+            from: '/concepts/',
+            to: '/concepts/introduction/'
+        },
+        {
+            from: '/setup/',
+            to: '/setup/quickstart/'
+        },
+        {
+            from: '/tutorials/',
+            to: '/tutorials/introduction/'
+        }
+    ]
 }

gatsby-node.js

@@ -1,5 +1,8 @@
+/* eslint-disable no-console */
+
 const path = require('path')
 const { createFilePath } = require('gatsby-source-filesystem')
+const { redirects } = require('./config')
 
 exports.onCreateNode = ({ node, getNode, actions }) => {
     const { createNodeField } = actions
@@ -34,7 +37,20 @@ exports.onCreateNode = ({ node, getNode, actions }) => {
 }
 
 exports.createPages = ({ graphql, actions }) => {
-    const { createPage } = actions
+    const { createPage, createRedirect } = actions
+
+    //
+    // create redirects
+    //
+    redirects.forEach(({ from, to }) => {
+        createRedirect({
+            fromPath: from,
+            redirectInBrowser: true,
+            toPath: to
+        })
+
+        console.log('Create redirect: ' + from + ' --> ' + to)
+    })
 
     return new Promise((resolve, reject) => {
         resolve(