Add DjangoCache driver (pulled from mailgun/flanker#16 via @nickcatal)
Merge branch 'master' into feature/django-cache-driver
Ditch redis on travis, since we're using Django's (locmem) cache.
Add MANIFEST.in
Merge branch 'master' into feature/django-cache-driver
Update README.md
Coverage and pep8 in Tox
Added a changelog to the README.