Fix social media link spacing

Before:
![screen shot 2014-09-08 at 2 16 36 pm](https://cloud.githubusercontent.com/assets/34726/4190309/5506a9c2-3784-11e4-9e9d-3fd4681e2a63.png)

After:
![screen shot 2014-09-08 at 2 16 46 pm](https://cloud.githubusercontent.com/assets/34726/4190315/5f32e0fa-3784-11e4-969b-9127af12f5c8.png)