Khan/live-editor — pull request #172 by jaredly (2014-08-19 21:30:07+00:00)
Title: Make the demo more approachable

added a header, some margin around the edges, and a default bit of code.

![image](https://cloud.githubusercontent.com/assets/112170/3973452/f7408f70-27e7-11e4-9e04-2bf6c1247a1b.png)