Coin: Added padding and changed the font size.

Old:
![screen shot 2014-05-08 at 12 16 58 pm](https://cloud.githubusercontent.com/assets/81969/2918044/3b5be906-d6cc-11e3-811f-5d0ccf5f9d3a.png)

New:
![screen shot 2014-05-08 at 12 17 05 pm](https://cloud.githubusercontent.com/assets/81969/2918048/3f0ecfaa-d6cc-11e3-8c91-a013de465442.png)