Prevent footer text from overflowing

Prevent footer text from overflowing on devices with small screens.

Before my fix (I have selected the text to make it easier to see):
![screenshot](https://cloud.githubusercontent.com/assets/4295266/3787898/66d9c4a2-1a3f-11e4-9b7b-5a3723bde7c5.png)


After my fix:
![screenshot from 2014-08-02 13 24 52](https://cloud.githubusercontent.com/assets/4295266/3787901/0b4f4480-1a40-11e4-8d91-08c0bbfe1957.png)