Update README.md

Changed sudo note

README.md

@@ -96,7 +96,7 @@ The following steps are required for initial programming of the AIOC:
   dfu-util -a 0 -s 0x08000000 -D aioc-fw-x-y-z.bin
   ````
   __Note__ that a ``libusb`` driver is required for this. On Windows there are additional steps required as shown [here](https://yeswolf.github.io/dfu) (*DFuSe Utility and dfu-util*). On other operating systems (e.g. Linux, MacOS), this just works ™ (provided libusb is installed on your system).
-  `sudo` may be required on MacOS.
+  On Linux (and MacOS), your user either needs to have the permission to use libusb (``plugdev`` group) or you might need to use ``sudo``.
 - Remove short from first step, unplug and replug the device, it should now enumerate as the AIOC device
 
 ### Firmware updating