Update readme

Author: NetvoidStaff

README.md

@@ -1,3 +1,15 @@
 # NetGate SDK for Unity
 
+## Install via UPM (Unity Package Manager)
+1. Open Unity
+2. Open Package Manager (Window -> Package Manager)
+3. Click on the + icon (Add package from git URL...)
+4. Enter URL: https://github.com/netvoid-labs/netgate-unity.git#upm
 
+
+## Dependencies
+- NativeWebSocket ( https://github.com/endel/NativeWebSocket )
+
+
+## License
+MIT