poltergeist_env.rb

require "Capybara"
require "Capybara/cucumber"
require "capybara/poltergeist"



Capybara.register_driver :poltergeist do |app|
    Capybara::Poltergeist::Driver.new(
      app,
      window_size: [1280, 1024]#,
      #debug:       true
    )
  end
  Capybara.default_driver    = :poltergeist
  Capybara.javascript_driver = :poltergeist