undefined symbol: libusb_set_option on linux

[gnuton]

Hi,
I tested the flasher on ubuntu and when try to flash I get "undefined symbol: libusb_set_option on linux".
the dfu-bundled with the builds seems to link to wrong libusb

[gnuton]

To make the flasher working in the current build you must run

sudo apt-get install dfu-util

This will install a working dfu-util which will be used by the flasher to flash your radio

[gnuton]

This issue is pretty much similar to #44