Default configuration PORT and IP to Rails 4.x (Cloud9)

#file bin/rails
---------------

#!/usr/bin/env ruby
begin
  load File.expand_path('../spring', __FILE__)
rescue LoadError => e
  raise unless e.message.include?('spring')
end
APP_PATH = File.expand_path('../../config/application', __FILE__)
require_relative '../config/boot'

# Set default host and port to rails server
if ARGV.first == 's' || ARGV.first == 'server'
  require 'rails/commands/server'
  module Rails
    class Server
      def default_options
        super.merge(Host:  ENV["IP"], Port: ENV["PORT"])
      end
    end
  end
end

require 'rails/commands'