Update about page

![image](https://cloud.githubusercontent.com/assets/2110805/5544231/932d2110-8b56-11e4-930d-d9529c15a6bc.png)

![image](https://cloud.githubusercontent.com/assets/2110805/5544237/b07a7952-8b56-11e4-9ca6-f3438fa6e690.png)