message: Add a little echo command
diff: @@ -177,10 +177,14 @@ def validate(model_num=None, validate_name=None):
  validate_name=validate_name)
  +def echo():
  + pass # Flags are echo'd in the ifmain block below.
  +
  +
  parser = argparse.ArgumentParser()
  argh.add_commands(parser, [train, selfplay, gather,
  - bootstrap, game_counts, validate])
  + bootstrap, game_counts, validate, echo])
  if __name__ == '__main__':
  print_flags()
  