Django12factor

* Python 3.2 and 3.4 support
* Improved test suite - 100% coverage + flake8
* Multiple database support - `TEST_DATABASE_URL` will create `settings.DATABASES['test']`

* Update dependencies

* Grab arbitrary environment variables as settings with the `custom_settings` parameter

* Initial public release
* Supported environment variables:
* DEBUG
* TEMPLATE_DEBUG
* CACHES (using django-cache-url)
* LOGGING
* DATABASES (using dj-database-url)
* ALLOWED_HOSTS
* SECRET_KEY