Feature/add facebook picto

# What I did?

I added a facebook picto to the list of icons. I did not have time circle, it is in a future TODO.

![screen shot 2014-09-22 at 6 54 23 am](https://cloud.githubusercontent.com/assets/5713670/4355079/df557dac-4246-11e4-9968-161b11d1f370.png)