Use Devicons for coffescript

I like like the coffescript icon from Devicons alot better then the one from Font-Awesome... hope you agree

Font-Awesome: 
![screenshot 2014-08-13 08 58 21](https://cloud.githubusercontent.com/assets/145288/3902075/5d72cdc0-22b7-11e4-83ef-a8f44537dcc2.png)

Devicons:
![screenshot 2014-08-13 08 57 58](https://cloud.githubusercontent.com/assets/145288/3902068/4ac44f32-22b7-11e4-9c69-21f43024ddd9.png)