Shopify/active_merchant

require 'pathname'

module ActiveMerchant
  module Billing
    load_path = Pathname.new(__FILE__ + '/../../..')
    Dir[File.dirname(__FILE__) + '/gateways/**/*.rb'].each do |filename|
      gateway_name      = File.basename(filename, '.rb')
      gateway_classname = "#{gateway_name}_gateway".camelize
      gateway_filename  = Pathname.new(filename).relative_path_from(load_path).sub_ext('')

      autoload(gateway_classname, gateway_filename)
    end
  end
end