Test client build 0.1.0

This is a built test client please use the client archive and not the source archives.

• New example game scene with new player characters from Mixamo
• Name plate with steam name and icon above each player
• Invite to join works when the user to be invites is already at the main menu and the person inviting is in a game as a host or a client.

Alpha test 0.0.1

Update readme to mention git lfs support as required.