Merge pull request #8 from nemesisdesign/master

Support Ordered Dicts + Fix Missing Import for Improperly Configured Exception
added Federico Capoano / @nemesisdesign to contributors
Merge pull request #9 from nemesisdesign/master

validation error instead of 500 internal server error when submitting invalid geojson
Merge pull request #11 from nemesisdesign/master

test app
Added link to GeoDjango docs for spatial databases
Update README.md