Fixes for PR #96 (#170)

* Implement basic multiplayer functionality

* Update README.md

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Co-authored-by: Slenderman <ssimulpong@outlook.com>

Minecraft.Client/Common/Network/PlatformNetworkManagerInterface.h

@@ -84,6 +84,7 @@ public:
 	virtual void HandleSignInChange() = 0;
 
 	virtual bool _RunNetworkGame() = 0;
+	virtual void SetGamePlayState() {}
 
 private:
 	virtual bool _LeaveGame(bool bMigrateHost, bool bLeaveRoom) = 0;