Update README for visual regression testing

README.md

@@ -1,17 +1,18 @@
 Introduction
 ============
 
-Onion is the web client for Ascribe. The idea is to have a well documented,
-easy to test, easy to hack, JavaScript application.
+Onion is the web client for Ascribe. The idea is to have a well documented, modern, easy to test, easy to hack, JavaScript application.
 
-The code is JavaScript ECMA 6.
+The code is JavaScript 2015 / ECMAScript 6.
 
 
 Getting started
 ===============
+
 Install some nice extension for Chrom(e|ium):
 
 - [React Developer Tools](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi)
+- [Alt Developer Tools](https://github.com/goatslacker/alt-devtool)
 
 ```bash
 git clone git@github.com:ascribe/onion.git
@@ -37,17 +38,34 @@ Additionally, to work on the white labeling functionality, you need to edit your
 
 JavaScript Code Conventions
 ===========================
+
 For this project, we're using:
 
 * 4 Spaces
-* We use ES6
+* ES6
 * We don't use ES6's class declaration for React components because it does not support Mixins as well as Autobinding ([Blog post about it](http://facebook.github.io/react/blog/2015/01/27/react-v0.13.0-beta-1.html#autobinding))
 * We don't use camel case for file naming but in everything Javascript related
-* We use `let` instead of `var`: [SA Post](http://stackoverflow.com/questions/762011/javascript-let-keyword-vs-var-keyword) 
-* We don't use Javascript's `Date` object, as its interface introduced bugs previously and we're including `momentjs` for other dependencies anyways
+* We use `momentjs` instead of Javascript's `Date` object, as the native `Date` interface previously introduced bugs and we're including `momentjs` for other dependencies anyway
+
+Make sure to check out the [style guide](https://github.com/ascribe/javascript).
+
+Linting
+-------
+
+We use [ESLint](https://github.com/eslint/eslint) with our own [custom ruleset](.eslintrc).
+
+
+SCSS Code Conventions
+=====================
+Install [lint-scss](https://github.com/brigade/scss-lint), check the [editor integration docs](https://github.com/brigade/scss-lint#editor-integration) to integrate the lint in your editor.
+
+Some interesting links:
+* [Improving Sass code quality on theguardian.com](https://www.theguardian.com/info/developer-blog/2014/may/13/improving-sass-code-quality-on-theguardiancom)
+
 
 Branch names
-=====================
+============
+
 Since we moved to Github, we cannot create branch names automatically with JIRA anymore.
 To not lose context, but still be able to switch branches quickly using a ticket's number, we're recommending the following rules when naming our branches in onion.
 
@@ -58,22 +76,21 @@ AD-<JIRA-ticket-id>-brief-and-sane-description-of-the-ticket
 where `brief-and-sane-description-of-the-ticket` does not need to equal to the ticket's title.
 This allows JIRA to still track branches and pull-requests while allowing us to keep our peace of mind.
 
+
 Example
--------------
+-------
+
 **JIRA ticket name:** `AD-1242 - Frontend caching for simple endpoints to measure perceived page load <more useless information>`
 
 **Github branch name:** `AD-1242-caching-solution-for-stores`
 
-SCSS Code Conventions
-=====================
-Install [lint-scss](https://github.com/brigade/scss-lint), check the [editor integration docs](https://github.com/brigade/scss-lint#editor-integration) to integrate the lint in your editor.
-
-Some interesting links:
-* [Improving Sass code quality on theguardian.com](https://www.theguardian.com/info/developer-blog/2014/may/13/improving-sass-code-quality-on-theguardiancom)
-
 
 Testing
-===============
+=======
+
+Unit Testing
+------------
+
 We're using Facebook's jest to do testing as it integrates nicely with react.js as well.
 
 Tests are always created per directory by creating a `__tests__` folder. To test a specific file, a `<file_name>_tests.js` file needs to be created.
@@ -83,7 +100,15 @@ This is due to the fact that jest's function mocking and ES6 module syntax are [
 
 Therefore, to require a module in your test file, you need to use CommonJS's `require` syntax. Except for this, all tests can be written in ES6 syntax.
 
-## Workflow
+Visual Regression Testing
+-------------------------
+
+We're using [Gemini](https://github.com/gemini-testing/gemini) for visual regression tests because it supports PhantomJS and SauceLabs.
+
+
+Workflow
+========
+
 Generally, when you're runing `gulp serve`, all tests are being run.
 If you want to test exclusively (without having the obnoxious ES6Linter warnings), you can just run `gulp jest:watch`.
 
@@ -134,9 +159,16 @@ A: Easily by starting the your gulp process with the following command:
 ONION_BASE_URL='/' ONION_SERVER_URL='http://localhost.com:8000/' gulp serve
 ```
 
+Or, by adding these two your environment variables:
+```
+ONION_BASE_URL='/'
+ONION_SERVER_URL='http://localhost.com:8000/'
+```
+
 Q: I want to know all dependencies that get bundled into the live build.
 A: ```browserify -e js/app.js --list > webapp-dependencies.txt```
 
+
 Reading list
 ============
 
@@ -149,7 +181,6 @@ Start here
 - [alt.js](http://alt.js.org/)
 - [alt.js readme](https://github.com/goatslacker/alt)
 
-
 Moar stuff
 ----------