Using-Private-Channels.md

@@ -60,3 +60,9 @@ var private_channel = dispatcher.subscribe_private('channel_name', function() {
   console.log( "Authorization failed because " + reason.message );
 });
 ```
+
+By default, all subscribers in to a channel will be removed when that channel is made private. If you don't wish active subscribers to be removed from a previously public channel when making it private, uncomment and set the following in config/initializers/websocket_rails.rb to true.
+
+```ruby
+config.keep_subscribers_when_private = true
+```