Merge pull request #20 from marcesher/master

Small fixes to hmda data load
Add integration testing to README
Added tests for dataset handlers
Merge branch 'master' into testing
Add tests for /data/dataset/slice
Add tests to make sure 404 works when either the dataset or slice does not exist
Added integration tests for the rest of the URLs
Fix connecting to Mongo in integration tests
Merge pull request #23 from marcesher/master

INTing the mongo port
Merge pull request #21 from cndreisbach/testing

Add testing for all URLs