Mobile (first) landing page layout

![rbb-mobile](https://cloud.githubusercontent.com/assets/662225/3639675/59c291a4-1085-11e4-9891-42e319cad698.gif)

Includes
* jQuery gem
* Setup of project layouts
* Dummy classes to show elements which require hook-up
Since we're using bourbon, could we use the mixin for `transform` here?