- Renamed Python module to eb_prune (otherwise import fails).

- Added log files and .tox to gitignore.
- Beginning work on README file (just heading, single note and TODO list for
  now).
- Added MANIFEST.in.
- Refactored code in to a main function (for console script).
- Added setup.cfg.
- Specify Python 3.5 and 2.7 (what I have available locally for testing).
- Added dependency list.