Added admonition tip for printing settings.

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

@@ -55,6 +55,12 @@ public void toggleToFullscreen() {
 }
 ----
 
+[TIP]
+====
+To view your current settings, use the System class.
+
+`System.out.println(settings);`
+====
 
 == Properties
 [cols="30,55,15", options="header", caption="Table A: "]