documenting game
tweaking game.{h,c}pp
fix texture path
remove loadpng dependency. Relying on SOIL now
remove libpng from README
add several sound effects
add character movement sound
better character sound
add sounds to undo; add heavy box on stage 2 for testing purposes
test
Bugfix from hud construction
Solving bug in last message by fixing method Game::renderSingleImage(const char*)
improve the statusbar
add current stage/level to the status bar; move this responsability to game (from gui)
improve level 1
improve level 1
add support for mouse scrolling
Update game.cpp

scaling now
remove background color from statusbar
Merge branch 'master' of https://github.com/thiagowfx/cg-sokoban