[Ready] Angular framework merge

PR to merge an angular scaffold into the project. Changes:

* [X] Gulp replaces Grunt
* [X] Angular + Front matter functionality
* [X] Angular scaffold imports correct files
* [X] Readme update explaining some of the angular features
* [X] Bower/Package.json updates
* [x] Docs converted into the AngularJS scaffold
* [x] new styles used in the scaffold

CC/ @zurbrandon