Create basic Stack class for items
Basic skeleton of GameStateManager
Getting a StateManager on startup
Items are gatherable but do not stack right!
Item generation is limited by the proper parameters again
Refactored some of the bound-checking and commented for my sake
Items on map weren't counting down. Refactored to be closer to name/purpose
Cleaning more out-dated code
Merge pull request #14 from icbat/game-state-manager

Game state manager