# File lib/guard/notifiers/terminal_notifier.rb, line 30
      def available?(silent=false)
        require 'terminal-notifier-guard'

        if ::TerminalNotifier::Guard.available?
          true
        else
          ::Guard::UI.error 'The :terminal_notifier only runs on Mac OS X 10.8 and later.' unless silent
          false
        end

      rescue LoadError, NameError
        ::Guard::UI.error "Please add \"gem 'terminal-notifier-guard'\" to your Gemfile and run Guard with \"bundle exec\"." unless silent
        false
      end