gistfile1.rb

require 'growl'

module Jekyll
  class GrowlHook < Hook
    safe false
    sequence :pre, :post
    
    def run(site, sequence)
      case sequence
      when :pre
        Growl.notify 'Building...', :title => 'Jekyll'
      when :post
        Growl.notify 'Build complete', :title => 'Jekyll'
    end
  end
end