GitHub can now handle multiple statuses without the need for a third party app. see here for more information! This repository will be removed and the web app discontinued shortly.
This is a Django-powered web app that allows multiple pull request statuses (e.g. from Travis and Appveyor) to be combined into a single one. You can visit the web app here:
http://github-multi-status.herokuapp.com
This was developed as a quick hack, but if you are interested in helping develop it further, please let me know!