Moved Monster specific stuff to new subpackage
Add a LocationType Enum instead of using strings.

This makes this game compatible with Java6 because of the switch statement in MonsterFactory.
And it keeps the code a bit cleaner I think, also DRY :)
Add imports for Monster classes in Game.java
that already prints a newline at the end...
locationType is now an Enum, need a toString() there
remove some whitespace