Capybara PhantomJS Poltergeist

scrape.rb

require 'capybara'
require 'capybara/dsl'
require 'capybara/poltergeist'

Capybara.register_driver :poltergeist do |app|
  options = {
    :js_errors => false
  }
  Capybara::Poltergeist::Driver.new(app, options)
end

Capybara.default_driver = :poltergeist
Capybara.run_server = false

class Request
  include Capybara::DSL

  def visit_home
    visit "http://google.com/"
  end

  def print_html
    $stdout.puts "\n\n", evaluate_script(%Q{ document.body.innerHTML }), "\n\n"
  end

  def done!
    $stdout.puts "Done!"
    begin
      page.driver.quit
    rescue Exception => e
    end
  end
end

req = Request.new
req.visit_home
req.print_html
req.done!