Update README.md

Author: VirtueSky

README.md

@@ -3,6 +3,12 @@
 [![openupm](https://img.shields.io/npm/v/com.google.external-dependency-manager?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.google.external-dependency-manager/)
 [![openupm](https://img.shields.io/badge/dynamic/json?color=brightgreen&label=downloads&query=%24.downloads&suffix=%2Fmonth&url=https%3A%2F%2Fpackage.openupm.com%2Fdownloads%2Fpoint%2Flast-month%2Fcom.google.external-dependency-manager)](https://openupm.com/packages/com.google.external-dependency-manager/)
 
+## Install
+Add the line below to Packages/manifest.json for version `1.2.185`
+```json
+"com.google.external-dependency-manager": "https://github.com/googlesamples/unity-jar-resolver.git?path=upm#v1.2.185",
+```
+
 ## Overview
 
 The External Dependency Manager for Unity (EDM4U) (formerly Play Services