Merge pull request #2 from jfmatth/master

Update setup.py
Add 'jfmatth' as Contributor
Fix date on HISTORY.rst
Bump Version
Fix issue with create_superuser method on UserManager
Bump Version
Bug Fix + Bump version
Update README.rst
Bump Version
Merge branch 'master' of https://github.com/jfmatth/django-users2