Add version added note for the debug:event-dispatcher command

adamelso · adamelso · commit a3d43a52b81d · 2015-01-08T15:02:34.000Z
diff --git a/cookbook/service_container/event_listener.rst b/cookbook/service_container/event_listener.rst
@@ -143,6 +143,9 @@ done as follow::
 Debugging Event Listeners
 -------------------------
 
+.. versionadded:: 2.6
+    The ``debug:event-dispatcher`` command was introduced in Symfony 2.6.
+
 You can find out what listeners are registered in the event dispatcher
 using the console. To show all events and their listeners, run:
 
