The osa-differ script has moved to another repo[1] to speed up
development and load it into pypi.
[1] https://github.com/major/osa_differ
Change-Id: I816c4391233b0bbf251be76d9dfad73b2f6c30a5
This patch adds documentation for using the ``osa-differ.py`` script
and how to handle GitHub API tokens.
Change-Id: I746d1fd75d81d964c76aca3cde6bfe1a667c3645