Hubot runs under nodejs, for linux do install: (http://how-to.linuxcareer.com/how-to-install-and-use-hubot-robot-on-ubuntu-machine)
sudo apt-get update sudo apt-get install build-essential sudo apt-get install libssl-dev redis-server libexpat1-dev sudo apt-get install nodejs sudo apt-get install npm sudo apt-get install git-core
Add the stuff:
npm install -g coffee-script npm install --save hubot-hipchat