How to Send RubyMine Notifications to Growl/NotifyOSD?

I want just send command-line notifications (like "notify-send 'done' ") after some long rake tasks starting from Rubymine. Maybe I need some wrapper for rake? Thanks for help!

1. Add terminal-notifier gem to Gemfile
2. Add few lines to Project/bin/rake file: https://gist.github.com/skydan/f333cd1fc2900f4b4ed7