CoffeScript
Javascript (instead): http://stackoverflow.com/questions/15723017/can-i-write-scripts-for-hubot-in-javascript
Hubot Script and Samples
Automation and Monitoring with Hubot
https://leanpub.com/automation-and-monitoring-with-hubot/read (usefull samples and educational breakdown)
Hacking Hubot with Hubot
http://taylor.fausak.me/2013/02/24/hacking-hubot-with-hubot/