Post hooks

- Parse requests from Bitbucket
- Put badge routes on Pull Request's description
- Support OAUTH authentication to BitBucket API
- Kill many minor bugs
- Make things work :sparkles:

![screenshot from 2014-03-11 16 43 58](https://f.cloud.github.com/assets/2074433/2387154/12a49a3c-a934-11e3-87d3-b3340ca94391.png)