Booting Rpi3 MyController from USB only

[skywatch]

I just tried this today. It works!!!

Now no need for SD card (and no more sdcard corruption either). I had a spare 16Gb Toshiba stick hanging around and decided to give it a go. All working as before. Tested SSH, update, upgrade and everything is fine.

A possible way to go if you have pi3 and worried about SD card failure.