Node.js examples have incorrect connection string code.

So all the docs @ http://docs.couchbase.com/developer/node-2.0/hello-couchbase.html have the code

var couchbase = require("couchbase");

// Connect to Couchbase Server
var cluster = new couchbase.Cluster('127.0.0.1:8091');
var bucket = cluster.openBucket("<bucketname>");

However when I use that code, I get a `error.code = 23` in my `openBucket` callback. I believe this is incorrect code, because leaving out the port, fixes the issue for me.