Just pushed an update of croft and jolie with MQTT support. Documentation on wiki will be written soon, but for those of you who can't wait testing; the Mosquitto MQTT broker is publicly available at
nodes/<eui>/packets. Use + and # for wildcards. More info here: http://www.hivemq.com/blog/mqtt-essentials-part-5-mqtt-topics-best-practices
Also, I included Node RED in the demonstration environment, see http://croft.thethings.girovito.nl:1880. Note that you can spin up your own Node RED instance and get data using the MQTT broker.