debugged a few width/height confusions
added sample glider
added reading png file
hello!
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/gol/GameOfLifeBoard.java
	src/gol/GameOfLifeSwingDisplay.java
	src/gol/stefanAndJurgen/GameOfLife.java
Merge pull request #2 from jurgenvinju/master

have fun!