Test page for device events

This angular app prints out events emitted from a Leap controller.  It allows protocol and leapjs version to be specified. @neptunius - this is a first draft; how's it fit your spec?

![screenshot 2014-02-26 11 33 05](https://f.cloud.github.com/assets/407497/2274502/1be71a6e-9f1d-11e3-91c3-9691a41fb1e6.png)