This Gist shows how to set up a Rails project to practice BDD with CoffeeScript, Guard and Jasmine. You can see this setup in action on Vimeo
- Install Gems with Bundler with 
bundle install - Define your guards with 
mate Guardfile - Initialize Jasmine with 
bundle exec jasmine init - Configure Jasmine with 
mate spec/support/yasmine.ym - Start Guard with 
bundle exec guard