Merge pull request #129 from umdlife/hotfix/check_manufacturer_name

Append the device only if the manufacturer name is 'Bitcraze AB'

cflib/drivers/cfusb.py

@@ -65,6 +65,7 @@ def _find_devices():
     if pyusb1:
         for d in usb.core.find(idVendor=USB_VID, idProduct=USB_PID, find_all=1,
                                backend=pyusb_backend):
+            if d.manufacturer == 'Bitcraze AB':
                 ret.append(d)
     else:
         busses = usb.busses()