Publishes number of distinct commits per push as well as number of modified,
removed and added files to a [Pachube](https://pachube.com/) feed. Datastreams
are created / updated for each repository name. The data is taken for only one
selected branch.

Install Notes
-------------

  1. Create a feed on [Pachube](https://pachube.com/).
  2. Create an api key that has PUT permissions on the feed.

