Make a screenshots and page dumps

cuts_of_rails_helper.rb

  config.after(:each, js: true) do |example|
    begin
      result_filebase = Rails.root.join('tmp', 'screenshots', "#{DateTime.now.to_i}_#{example.description.gsub(%r{[\x00\/\\:\*\?\"<>\|\s]}, '_')}")

      Capybara.page.save_page("#{result_filebase}.html")
      Capybara.page.save_screenshot("#{result_filebase}.png", full: true)
    rescue
      puts 'Capybara driver doesn\'t support screenshot feature'
    end if example.exception
  end