Added hint to auto register command handlers

prooph/service-bus-symfony-bundle/0.6/config/packages/prooph_service_bus.yaml

@@ -11,3 +11,15 @@ services:
         public: false
 
     Prooph\ServiceBus\CommandBus: '@prooph_service_bus.default_command_bus'
+
+    # Autoregister your message handlers here
+    # Make sure App\Messaging\* services are not overriden in `config/services.yaml`
+    # Read more at https://github.com/prooph/service-bus-symfony-bundle/blob/master/doc/routing.md
+    #
+    # command_handlers:
+    #     resource: '../../src/Messaging/Command/*Handler.php'
+    #     namespace: App\Messaging\Command\
+    #     public: true
+    #     autowire: true
+    #     tags:
+    #         - { name: 'prooph_service_bus.default_command_bus.route_target', message_detection: true }