Merge pull request #33 from DrkSephy/master

Implemented weapon bonus system and fixed bugs
Added obtainable enemy item drops upon death
Hero no longer starts with full inventory, for sake of this feature
Added two functions hasSlots and freeSlot
Added obtainable enemy item drops upon death
Removed some unnecessary lines
Merge pull request #34 from czhang/master

Implemented obtainable enemy item drops
Adding all enemy files, removing old animation sheets
Merge remote-tracking branch 'upstream/master'