First commit for DRF 2.2 update. Tests are not working yet.
Update permissions from bluebottle_drf2.
Use many=True for many related serializers.
Update to DRF 2.2.1.
Merge branch 'master' into drf-2.2
Merge pull request #211 from onepercentclub/drf-2.2

Drf 2.2