Added Classes.
Added first Version of Inventory Code
Added Exception classes
Added classes and methods
Added Initial Inventory to Player
Renamed Item.value to Item.goldValue()
Added Documentation for classes
Added Functions and fields to describe Itemtype
Added preliminary bonus
Merge branch 'master' into inventory-base

Conflicts:
	src/rogue/creature/Player.java
Added sum functions
Added first preparations
Added Code to show preliminary inventory interface.
Implemented Display of Inventory
Implemented First UI Version for Inventor
Merge branch 'inventory-base'