cinder/Cinder — pull request #474 by drewish (2014-07-24 03:08:09+00:00)
Title: Start a contributing guide

Took me a while to realize that PRs should be opend against dev. We can provide
some hints in the contributing file to help others avoid this mistake. GitHub
will display a link to it when the PR is created.

https://github.com/blog/1184-contributing-guidelines