ruby get all ducky payloads

payload_grabber.rb

require 'open-uri'
require 'mechanize'
require 'active_support/all'
URL = 'https://github.com/hak5darren/USB-Rubber-Ducky/wiki/Payloads'

class PayloadGrabber

  def initialize(url=URL)
    @agent = Mechanize.new
    @agent.get(url)
    @links = payload_links
  end

  def payload_links
    @agent.page.search('.present')
  end

  def make_go
    loop_through(@links) do |page|
      grab_payload(page)
    end
  end

  def grab_payload(page)
    title = page.search('.instapaper_title')
    filename = title_to_filename(title)
    puts filename
    commands = page.search('pre').text
    if !File.exist?(filename)
      file = File.new(filename, 'w')
      file << commands
      file.close
    end
  end

  def title_to_filename(title)
    title.text.squish.tr(',', '').gsub(' ', '_').downcase
  end

  def loop_through(links, &block)
    links.each do |link|
      payload_page = @agent.click(link)
      yield payload_page
    end
  end
end
PayloadGrabber.new.make_go