Ruby 2.0 module prepend example

gistfile1.rb

# Not our code
class Action
  def start
    "just do it"
  end
end

# The module including our modifying code
module RubyIt
  def start
    super + " better with Ruby!"
  end
end

class Action
  prepend RubyIt
end

p Action.new.start
# -> "just do it better with Ruby!"

Thanks @mattetti...It's very simple and understandable example.