running `python3 roar-vr.py -c` permission error

[wuxiaohua1011]

When running python3 roar-vr.py -c according to instruction https://github.com/augcog/ROAR_Jetson/blob/fix_jetson_control/Jetson-Control.md

I encounter this error:
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyACM0: [Errno 13] Permission denied: '/dev/ttyACM0'

The solution is to
sudo chmod 666 /dev/ttyACM0

following from this stackoverflow post

Maybe good to put that in instruction