LauncherFrame singleplayer and client buttons updated

When the buttons are pressed they set up the network and pass in whether
or not the game instance will be singleplayer (no networking required)
or multiplayer.
Merge branch 'master' of https://github.com/CameronProbert/SWEN222Project.git
Merge branch 'master' of https://github.com/CameronProbert/SWEN222Project.git
Edited spelling