Githubinfo

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- Nothing changed yet.

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- Added optional export of the results to a JSON file. Useful if you want to
format the output yourself, for instance to create a HTML page.

- Added argument parsing via argparse. **Warning**: this requires python 2.7
at a minimum. I guess that's not a problem. At least ``-h`` now gives a
proper usage message!

- Added ``githubinfo.__version__`` attribute.

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- Small README fix: quote error in example config file. Thanks Maximilien
Riehl for noticing it!

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- Added proper documentation and usage instructions to the README.

- Detecting doctests, too. For ``.rst`` and ``.txt`` files, we search for
``>>>`` in the commit's patch, that's a pretty good indication of a doctest
commit. I needed this for detecting my well-tested commits in zc.buildout.

- Loading commits from branches, too.

- Added option for extra projects outside of the main ones. Commits in here
are only counted if they're from committers to our main organizations.

- Extracting test commit info from github organizations.

- Initial project structure created with nensskel 1.30.dev0.