Facebook Login

Hi there, i tried to make the issue related to facebook login, here some screenshots:

![screenshot from 2013-09-22 09 31 57](https://f.cloud.github.com/assets/987004/1187705/0064138c-2394-11e3-8b14-a1756432e005.png)
![screenshot from 2013-09-22 09 32 10](https://f.cloud.github.com/assets/987004/1187706/007a4e54-2394-11e3-836e-90e4f576c943.png)
![screenshot from 2013-09-22 09 32 27](https://f.cloud.github.com/assets/987004/1187707/0081e84e-2394-11e3-93a1-7d7de07e0e7b.png)

Actually, the facebook login link dont have any style or image related, maybe will be necesary to import a facebook image for login but, the login action works well

so, thats it, hoping you accept my commits