Added CouchDB plugin with authentication
Fixed bug with methods/status codes.  Removed some duplicate code. Refactored method/status codes to lists/iteration.
Added all metrics, and reworded the labels to match http://docs.couchdb.org/en/latest/api/misc.html#get-stats
Fixed erroneous variable reference.
Merge pull request #8 from blitz-io/master

Adding CouchDB Metrics