little refactor, game init
	modified:   Card.cs
	modified:   CardFactory.cs
	renamed:    KickCard.cs -> Cards/KickCard.cs
	renamed:    PunchCard.cs -> Cards/PunchCard.cs
	renamed:    VulnerabilityCard.cs -> Cards/VulnerabilityCard.cs
	new file:   Cards/WeaknessCard.cs
	modified:   GameObject.cs
	modified:   Player.cs
	modified:   Program.cs
	modified:   SharpDC.csproj
	modified:   SuperHero.cs
	modified:   SuperHeroFactory.cs
	new file:   SuperHeroes/GreenLatern.cs
	renamed:    MartianManhunter.cs -> SuperHeroes/MartianManhunter.cs
	renamed:    Superman.cs -> SuperHeroes/Superman.cs