implement argparse, add options in __init__, add more defaults
implement argparse, add options in __init__, add more defaults

yarocoder/dosenet-raspberrypi,yarocoder/dosenet-raspberrypi,tybtab/dosenet-raspberrypi,bearing/dosenet-raspberrypi,bearing/dosenet-raspberrypi,tybtab/dosenet-raspberrypi,cllamb0/dosenet-raspberrypi,cllamb0/dosenet-raspberrypi