github/teach.github.com — pull request #72 by randomecho (2013-03-02 04:18:33+00:00)
Title: Pare Contributing to action call; Markdown H1 format consistency

CONTRIBUTING could just do with being about what to contribute and how to help the materials instead of repeating what is already found in the README with the license and rep summary.

Or this may have been too much of an edit out.