Keep your eye on new commits being pushed to Github through an interactive interface. When new commits are seen by Hubeye, you can choose to be notified by one of Hubeye's notification systems (growl, libnotify, etc...). All interesting activity is logged, so leave your computer, come back, and know what changed.
Gemfile gem 'hubeye', '~> 0.3.5'
install gem install hubeye