Restructure and Redesign

* Move from Less to Sass
* Update home page with new copy, new social links, new bg image, etc
* Fix awkward nav hover states
* Refine Javascript logic across all page
* Refine JS API integrations


![screen shot 2013-11-28 at 1 09 41 am](https://f.cloud.github.com/assets/1334793/1652449/3ab6831e-5b14-11e3-8552-129aaf51efc4.png)
![screen shot 2014-01-02 at 12 24 41 am](https://f.cloud.github.com/assets/1334793/1830918/3798fd52-736e-11e3-83b4-f738465044df.png)