User authorized to contribute

:fork_and_knife: 

Let the world know when a user is authorized to contribute by displaying a little bling bling on their profile.

![screen shot 2014-07-16 at 11 29 04 am](https://cloud.githubusercontent.com/assets/928367/3601083/326c57e6-0cfe-11e4-8844-6a289f335a25.png)

Trello card: https://trello.com/c/Q2CL261O