README.md in sinatra-cometio-0.5.6 vs README.md in sinatra-cometio-0.5.7

@@ -28,10 +28,10 @@
 Server Side
 
 ```ruby
 require 'sinatra'
 require 'sinatra/cometio'
-set :cometio, :timeout => 120, :post_interval => 1
+set :cometio, :timeout => 120, :post_interval => 1, :allow_crossdomain => false
 
 run Sinatra::Application
 ```
 ```ruby
 io = Sinatra::CometIO
\ No newline at end of file