google/pull-request-mailer — pull request #13 by nh2 (2014-11-05 18:20:51+00:00)
Title: Verify Github webook secrets

This ensures that the hooks actually come from Github, see:
https://developer.github.com/webhooks/securing

The fictional `github >= 0.11.2` I'm depending on will hopefully be the outcome of https://github.com/jwiegley/github/pull/79#issuecomment-61848158.