CouchDB cookie auth from client.

cosmos.js

         var params = "name=augman&password=hello";
         $.post(this.host  + "/db/_session", params, function (res) {
            if (JSON.parse(res).ok) {
               cb(null, {message: "register success", details: res});
            } else {
               cb({message: "register failure", details: res}, null);
            }
         });