Moved south migrations directory to 'south_migrations' in preparation for Django 1.7 migrations.
Added initial Django 1.7 migration.
Raise ImproperlyConfigured if django migrations module does not exist (for South users).
Use @python_2_unicode_compatible decorator. Requires Django 1.4.2+.
Merge pull request #23 from mattaustin/master

Django 1.7 migration, and use of python_2_unicode_compatible decorator