Add PHPUnit documentation (4.3)
Update Ruby 2.1.5
Update gem dependencies
Update Angular.js documentation (1.3.4)
DRY up Angular version
Merge branch 'edno-master'

* edno-master:
  Add PHPUnit documentation (4.3)
Update PHPUnit icon
Improve PHPUnit scraper
Update Prism.js
Add PHP code highlighting
Changelog entry for PHPUnit
Add PHPUnit to About page
Add Nokogiri documentation

Closes #123.
Move changelog to a JSON file
Add Atom feed

Closes #141.