Update README.md

Author: heloufir

README.md

@@ -118,6 +118,12 @@ If you want to add your personalized avatar provider, Follow the below steps:
 
 And that's it <img src="github-content/smiley.png" width="20px">.
 
+## Pro tip
+
+This package can be used outside of **Filament** too, you can add the trait `Devaslanphp\FilamentAvatar\Core\HasAvatarUrl` to your user model.
+
+This trait will give you access to an appended attribute `avatarUrl` generated by the avatar provider, then you can use it as a `src` of your images.
+
 ## Credits
 
 - [heloufir](https://github.com/heloufir)