Headless Capybara

headless.rb

# in Gemfile
gem 'headless', :git => 'git://github.com/msgehard/headless.git'

# in some capybara support file
# I use features/support/world.rb

if Capybara.current_driver == :selenium && RAILS_EVN == 'hudson'
  require 'headless'

  headless = Headless.new
  headless.start

  at_exit do
    headless.destroy
  end
end