added note about timeouts to debug command

refs #958

lib/commands/debug.js

@@ -3,6 +3,9 @@
  * This command helps you to debug your integration tests. It stops the running queue and gives
  * you time to jump into the browser and check the state of your application (e.g. using the
  * dev tools). Once you are done go to the command line and press Enter.
+ * 
+ * Make sure you increase the timeout property of your test framework your are using (e.g. Mocha
+ * or Jasmine) in order to prevent the continuation due to a test timeout.
  *
  * <example>
     :debug.js