Live "Try it out" in the docs

This could probably get a nicer design, however it is working.

Remaining work:
- [ ] make it fit better to the docs design
- [ ] add prism stylesheet
- [ ] add failure handling for whenever bailey.lkng.me goes down

![screenshot 2014-08-03 22 58 33](https://cloud.githubusercontent.com/assets/476364/3791741/091e72d2-1b51-11e4-90ee-29b1a294e452.png)