Merge pull request #4 from crumblingstatue/master

Have ImageManager::addImage and SoundManager::addSound take const char*
ADD Holes in map
ADD Health on minimap
ADD Blood and corpse can fall in holes
Update .gitignore
Update readme.txt
ADD Resistance to the Butcher
FIX Cyclop centering
FIX No checker room for standard rats
ADD Better graphics for Rat King

+ "agonizing" graphics
MOD Rat King berserk attack mod
MOD Cyclop is stronger now
ADD Triple Shot

Item Book + Implementation
FIX Typo (CyclopS)
ADD Fire shot type
ADD Retaliation and Star Brooch

ADD : Star Brooch: item that increases fire range
MOD : Amulet of rage retaliates when the player is being hurt
FIX Cyclops' corpse false position
ADD Retaliation fire's sound
Update readme.txt
FIX Impact graphics at false position when

hitting teleporting imp