Updated to support FontAwesome ver 4.2.0

Updated to add support for FontAwesome 4.2.0, including 40 new icons:
![screen shot 2014-09-06 at 12 13 40 am](https://cloud.githubusercontent.com/assets/1294201/4174515/6f7b8840-3595-11e4-9e17-422e57348f6b.png)

Updated demo app as well, total of 502 icons now available.
![ios-simulator-screen-shot-sep-6 -2014 -12 20 28-am](https://cloud.githubusercontent.com/assets/1294201/4174543/9965e190-3596-11e4-8c3e-807c10d8b574.png)