python gridworld.py -m
 python gridworld.py -h
 python gridworld.py -g MazeGrid
python gridworld.py -a q -k 5 -m
python gridworld.py -a q -k 100 
python gridworld.py -a q -k 50 -n 0 -g BridgeGrid -e 1
 python crawler.py
 python pacman.py -p PacmanQAgent -x 2000 -n 2010 -l smallGrid 
 python pacman.py -p PacmanQAgent -n 10 -l smallG
 python pacman.py -p ApproximateQAgent -x 2000 -n 2010 -l sma
 python pacman.py -p ApproximateQAgent -a extractor=SimpleExtractor -x 50 -n 60 -l mediumGrid 
 python pacman.py -p ApproximateQAgent -a extractor=SimpleExtractor -x 50 -n 60 -l mediumClassic 
