message: Update client/server bundle link in README
diff: @@ -11,7 +11,7 @@ Further documentation pending.
  tl;dr:
  -1. Download the client+server bundle from [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.1/OpenFusion.zip).
  +1. Download the client+server bundle from [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.2.1/OpenFusion.zip).
  2. Run `FreeClient/installUnity.bat` once
  From then on, any time you want to run the "game":
  