Added admonition warning about not setting titles.

src/docs/asciidoc/jme3/intermediate/appsettings.adoc

@@ -15,6 +15,7 @@ Every class that extends jme3.app.SimpleApplication has properties that can be c
 Configure application settings in `main()`, before you call `app.start()` on the application object. If you change display settings during runtime, for example in `simpleInitApp()`, you must call `app.restart()` to make them take effect.
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+WARNING: The settings are saved based on the title of your game. This means that if you just remove the method call, instead of changing the setting back to the default and running the project again, your settings changes will remain in effect for all projects using that title.
 
 *Note:* Other runtime settings are covered in <<jme3/intermediate/simpleapplication#,SimpleApplication>>.