make general usb access doc simpler.
make general usb access doc simpler.

lancernet/Espruino,luetgendorf/Espruino,wilberforce/Espruino,wilberforce/Espruino,lancernet/Espruino,lancernet/Espruino,wilberforce/Espruino,wilberforce/Espruino,luetgendorf/Espruino,lancernet/Espruino,luetgendorf/Espruino,lancernet/Espruino,wilberforce/Espruino,luetgendorf/Espruino,luetgendorf/Espruino,wilberforce/Espruino,lancernet/Espruino,luetgendorf/Espruino,wilberforce/Espruino,luetgendorf/Espruino,lancernet/Espruino