changing featured comment font to textsans

Before
--------
![image](https://cloud.githubusercontent.com/assets/960919/2696125/f3b0141a-c3de-11e3-8736-205e95737aa4.png)
After
------
![image](https://cloud.githubusercontent.com/assets/960919/2696262/bbca8722-c3e0-11e3-8f3f-b33882d49d12.png)