$.couch is used to communicate with a CouchDB server.
Install the dependencies:
$ bower install
Enable CORS:
curl -X PUT http://localhost:5984/_config/httpd/enable_cors -d '"true"'
curl -X PUT http://localhost:5984/_config/cors/origins -d '"*"'
Restart CouchDB & open test/runner.html in a browser to run the testsuite.