doc: Update README.

Author: freezy

README.md

@@ -2,6 +2,10 @@
 
 This repo contains ready-to-use assets for the Visual Pinball Engine. They have been created following the guidelines documented [here](https://docs.visualpinball.org/creators-guide/editor/asset-library-styleguide.html).
 
+## Installation
+
+This package should install automatically when pulling the VPE package from the [registry](https://registry.visualpinball.org/).
+
 ## Setup
 
 You'll need [git LFS](https://git-lfs.github.com/) in order to use this repo. [Install the extension](https://github.com/git-lfs/git-lfs/releases/download/v2.12.0/git-lfs-windows-v2.12.0.exe) if you don't already have. Then enable it before cloning the repo.