Cloudant query support

Added code to create a simple index with integration tests using Cloudant query API #53 . Before adding more features, wanted to have a quick review of the components. We don't have querying yet. If okay, will add delete/listing of indices, followed by query.
But does a `DELETE` need all that fields? MyCouch tries to stay away from generic requests so that it's clear what "params" exists for each request. I would start specific.