Pinned down dependency versions. Migrated from chai to must for testing.
Integrated level-indexing.

Specify an array of field names to index in the `index` property of your
model options to get secondary indexes built.
This should fix Travis with node 0.11.
Okay, never mind 0.11 on Travis.
And make the db.find() function available on the model prototype as well.
Finish off the find() feature, with tests. Document secondary indexes.
Ready to publish, I think.
Merge pull request #1 from ceejbot/subindexes

Subindexes