Added install instructions in main readme

README.md

@@ -12,6 +12,19 @@ The package uses [glTFast](https://github.com/atteneder/glTFast) to load the mod
 
 You can get the package from [![openupm](https://img.shields.io/npm/v/com.de-panther.webxr-input-profiles-loader?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.de-panther.webxr-input-profiles-loader/).
 
+### Setting package using OpenUPM
+
+Set a `Scoped Registry` in `Project Settings > Package Manager` for OpenUPM.
+
+```
+Name: OpenUPM
+URL: https://package.openupm.com
+Scope(s): com.de-panther
+          com.atteneder
+```
+
+Then in `Window > Package Manager` selecting `Packages: My Registries` and the WebXR Input Profiles Loader package would be available for install.
+
 ## Troubleshooting
 
 You might need to add Shader Variants of the Input Profiles Models to the build for the shaders to work. More info about that can be found at the glTFast docs.