Block8/PHPCI — pull request #414 by dancryer (2014-05-12 13:02:14+00:00)
Title: [Don't Merge Yet] Allow PHPCI to test Pull Requests

### Tasks

- [*] Add `extra` column to `Build` model
- [ ] Modify `WebhookController::github()` method to understand PR webhooks
- [ ] Modify `GithubBuild` model to work differently for PR builds