Added example usage from readme to defaults in argparser

pacman.py

@@ -520,15 +520,15 @@ def readCommand(argv):
     parser = OptionParser(usageStr)
 
     parser.add_option('-n', '--numGames', dest='numGames', type='int',
-                      help=default('the number of GAMES to play'), metavar='GAMES', default=1)
+                      help=default('the number of GAMES to play'), metavar='GAMES', default=6000)
     parser.add_option('-l', '--layout', dest='layout',
                       help=default(
                           'the LAYOUT_FILE from which to load the map layout'),
-                      metavar='LAYOUT_FILE', default='mediumClassic')
+                      metavar='LAYOUT_FILE', default='smallGrid')
     parser.add_option('-p', '--pacman', dest='pacman',
                       help=default(
                           'the agent TYPE in the pacmanAgents module to use'),
-                      metavar='TYPE', default='KeyboardAgent')
+                      metavar='TYPE', default='PacmanDQN')
     parser.add_option('-t', '--textGraphics', action='store_true', dest='textGraphics',
                       help='Display output as text only', default=False)
     parser.add_option('-q', '--quietTextGraphics', action='store_true', dest='quietGraphics',
@@ -550,7 +550,7 @@ def readCommand(argv):
     parser.add_option('-a', '--agentArgs', dest='agentArgs',
                       help='Comma separated values sent to agent. e.g. "opt1=val1,opt2,opt3=val3"')
     parser.add_option('-x', '--numTraining', dest='numTraining', type='int',
-                      help=default('How many episodes are training (suppresses output)'), default=0)
+                      help=default('How many episodes are training (suppresses output)'), default=5000)
     parser.add_option('--frameTime', dest='frameTime', type='float',
                       help=default('Time to delay between frames; <0 means keyboard'), default=0.1)
     parser.add_option('-c', '--catchExceptions', action='store_true', dest='catchExceptions',