patch applied, test added, and re-structured tests

This is an expedited request to get functionality back.  Tests to follow.

https://github.com/bower/registry/commit/f894b576da046d3d508b17b88672e152db4a39b7
Can this be `it('/packages should support curl', function (done) {...` to be consistent with the other routes spec? This way we don't need the nested describe blocks.