Version 3.0

The update that brought forth items!
 * Added Potion
 * Changed Harold's Stats
 * Added Experience Points
 * Enabled Item Menu
 * Added Sound Effects
 * Added Gold
 * Changed Inn
 * Changed Money to Shop
 * Added Shopkeeper
 * Changed World
 * Changed Forest
 * Changed music for Swamp
 * Changed music for Snow
 * Changed music for Town
 * Changed music for Desert
 * Changed Deep Forest
 * Changed Cave
 * Changed Ruins
 * Changed Palace
 * Changed Church
 * Changed Tower