README.md is out of date

The README.md quick start example shows the following line of code:

    mqttClient.publishString("message", topic: "publish/topic", qos: 2, retain: false)

The API appears to have changed to:

    mqttClient.publish(string: "message", topic: "publish/topic", qos: 2, retain: false)

Maybe there are other obsolete examples as well?