Quiz 2.0 - New Version PR

Hello guys, i would like you to approve this PR. I recreate the app from scratch whit few more features and changes.

Overview:
*  Replace stack Ruby ( Sinatra ) to Javascript ( AngularJS )
*  Changed from CSV file to JSON file as storage
*  Automation tasks using grunt, npm and bower.
*  Bunch of unit tests

It is up and running on: http://thiagofelix.github.io/faces-of-thoughtworks-quiz