fix: add Unity Gaming Services info to readmes [MTT-3263] (#608)

* readmes updated with UGS info/links

Author: fernando-cortez

Assets/Readme.asset

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:512ffb044e4ca1c4b125eea4266125dfe7c6c600bea20545afbe0ab3333350a5
-size 1634
+oid sha256:f829608f4fac5c3637e5daa00e20806530c3bf0420acfe14611195954e515f35
+size 1879

README.md

@@ -29,6 +29,10 @@ See [ART_NOTES.md](Documentation/ART_NOTES.md) for more information on the art o
 
 This project uses Git Large Files Support (LFS), which ensures all large assets required locally are handled for the project. See [Git LFS installation options](https://github.com/git-lfs/git-lfs/wiki/Installation) for Windows and Mac instructions. 
 
+## Registering the project with Unity Gaming Services (UGS)
+
+This project leverages several services from UGS to facilitate connectivity between players. In order to use these services inside your project, one must first [create an organization](https://support.unity.com/hc/en-us/articles/208592876-How-do-I-create-a-new-Organization-) inside Unity Dashboard, and enable both the [Relay](https://docs.unity.com/relay/get-started.html) and [Lobby](https://docs.unity.com/lobby/game-lobby-sample.html) services.
+
 ## Opening the project for the first time
 
 Once you have downloaded the project, the steps below should get you up and running: