Fixed testing, fixed python3 compatibility, added classifiers for PyPI

- Made it possible to run `python manage.py test` and get passing tests
- Added a `.travis.yml` file to enable Travis CI builds
- Fixed Python 3 compatibility without compromising Django 1.4 compatibility
- Added trove classifiers to `setup.py` for PyPI
No worries!  Thanks for taking the time to review it. :)

Good call on the location of `settings.py`.  I moved it to get things working, but forgot that I could specify its location to `manage.py`.