Feature/clean examples

A first stab at cleaning this up (replaces #276).

Sets things up for more clean-up and prettifies a bit. Removes extraneous scripts and code from `index.html`.

Before:
![screen shot 2014-04-17 at 9 53 53 pm](https://cloud.githubusercontent.com/assets/250437/2739606/b91ef238-c6b5-11e3-82cf-8ad0c68de14b.png)

After:
![screen shot 2014-04-17 at 9 54 10 pm](https://cloud.githubusercontent.com/assets/250437/2739607/bff9f5f8-c6b5-11e3-9f9b-3caded6fd6ee.png)