created items that have a polymorphic association with Heroes and Rooms.
created method for hero to add items to inventory from room.
Merge pull request #2 from alexcodreanu86/Editor_Room_work

Changed the way player starts and creates a new game. Modified maps_all ...
added comments to lay out where we will pick up and drop items.
Merge branch 'master' into items
move hero logic now checks to see if there is a room available to move into.
Merge pull request #3 from alexcodreanu86/items

Items
Changed routes to support games_launch and /all_games. Started adding a loader to the games_controller
Merge branch 'master' into Editor_Room_work