Update README.md

README.md

@@ -62,10 +62,10 @@ NewIcon allows you to edit a template file with Xcode by creating and opening a
 ```sh
 $ new-icon template edit TEMPLATE
 ```
+  - Tip: Make sure `My Mac` is selected as build destination.
 
 ![Editing the sample template](./Assets/TemplateEdit.png)
 
-
 ### Clear build cache for templates
 
 Template files need to be built before they can be used. At the very least, this takes several seconds, so NewIcon caches build product inside `~/.new-icon/cache` to speed up any subsequent use of the same template. There is a small command to clear this cache.