gistfile1.rb

def show_me_a_screenshot
  if Capybara.current_driver == :webkit
    name = "screen-shot-#{Time.now.strftime('%Y-%m-%d-%H-%M-%S')}.png"
    tmp_dir = File.join(Rails.root, 'tmp')
    FileUtils.mkdir_p tmp_dir
    file_name = File.join(tmp_dir, name)
    page.driver.save_screenshot file_name
    Launchy.open file_name
  end
end