Start Afresh(ish) with KSS

This changes introduces a test app that generates styleguides using [KSS](http://warpspire.com/kss/).  The running app looks like this:

![screen shot 2014-04-12 at 13 15 30](https://cloud.githubusercontent.com/assets/557957/2687164/691258e8-c23c-11e3-99fc-194ab306118e.png)

The contributing section tells how to edit the styleguides and provide example markup.  I've made a rough start.  We should revisit this as a team when we are ready to refactor our CSS code base.

I believe it's an effective way of producing a living and breathing version of [Taiyab's UI kit](https://trello-attachments.s3.amazonaws.com/52432e65b3f95bce100016bd/52b9761cd64c8d950b029026/506b21e94e2f9c147820c68a41615a3e/UIKit2.jpg).

cc @iHiD @taiyab