Added logout 

![screen shot 2014-06-21 at 12 30 09](https://cloud.githubusercontent.com/assets/520376/3349795/86964918-f97a-11e3-8350-3a3fc9dbff58.png)
![screen shot 2014-06-21 at 12 31 06](https://cloud.githubusercontent.com/assets/520376/3349797/ac7c81d8-f97a-11e3-998f-0b47786e7534.png)