fixed start positions and refactored MainMenu.cs

Signed-off-by: Christoffer Johnsson <stoffe1992@hotmail.com>
Merge branch 'master' of github.com:refforis/Racing-Game
Added cachefile to .gitignore list

Signed-off-by: Christoffer Johnsson <stoffe1992@hotmail.com>
Merge branch 'master' of github.com:refforis/Racing-Game

Conflicts:
	src/RaceGame/RaceGame/RaceGame/RaceGame.csproj.Debug.cachefile