cleaned up WorldSerializor.cs
worked on save and load
Merge branch 'master' of https://github.com/snowiow/SEP

Conflicts:
	Zuul/Commands/GoCommand.cs
	Zuul/Commands/HelpCommand.cs
	Zuul/Commands/HighscoreCommand.cs
	Zuul/Commands/InventoryCommand.cs
	Zuul/Commands/LoadCommand.cs
	Zuul/Commands/SaveCommand.cs
	Zuul/Commands/UseCommand.cs
	Zuul/Program.cs
	Zuul/Zuul.csproj
added world xml's
fixed git ignore