Clarified use of zip files and the assets folder.

src/docs/asciidoc/jme3/beginner/hello_asset.adoc

@@ -337,6 +337,8 @@ rootNode.attachChild(scene);
 
 As an exercise, let's try different ways of loading a scene. You will learn how to load the scene directly, or from a zip file.
 
+Remember that there will be no `assets` folder in a final deployment. If you are going to use a zip, do not to put it in the `assets` folder. Otherwise, you will likely get errors about a missing file.
+
 .  link:https://github.com/jMonkeyEngine/wiki/raw/master/src/docs/resources/Scenes/Town/town.zip[Download the town.zip] sample scene.
 .  Place the town.zip file in the top level directory of your JME3 project, like so:
 +