Batch compresses images

opponents/elaine/0-angry.png

opponents/elaine/0-calm.png

opponents/elaine/0-disappointed.png

opponents/elaine/0-excited.png

opponents/elaine/0-happy.png

opponents/elaine/0-interested.png

opponents/elaine/0-loss.png

opponents/elaine/0-nervous.png

opponents/elaine/0-pose.png

opponents/elaine/0-shocked.png

opponents/elaine/0-strip.png

opponents/elaine/0-win.png

opponents/elaine/1-angry.png

opponents/elaine/1-calm.png

opponents/elaine/1-disappointed.png

opponents/elaine/1-excited.png

opponents/elaine/1-happy.png

opponents/elaine/1-interested.png

opponents/elaine/1-loss.png

opponents/elaine/1-nervous.png