Add (failing) test for API root format

Expecting `[{"href": "/path/"]` rather than `["/path/"]`

https://www.pivotaltracker.com/story/show/74023124

[#74023124]
Implement fix for API root view

[Delivers #74023124]
Merge pull request #27 from sealevelresearch/fix-root-api-json-format

Implement fix for API root view