AnalyticalGraphicsInc/cesium — pull request #1621 by kring (2014-04-16 14:44:01+00:00)
Title: Add Navigation Help widget.

![image](https://cloud.githubusercontent.com/assets/924374/2720912/73f89772-c575-11e3-8021-30e8623443e2.png)

I know there's a lot more we could do, but let's try to keep the scope under control here.