Change uhubctl path

Explain how to change uhubctl path

Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>

Author: nbuchwitz

README.md

@@ -43,4 +43,13 @@ port.status = True
 
 print("Get port 1-1.1 status")
 print(port.status)
-```
+```
+
+# FAQ
+
+### How can I specify the path to ´uhubctl´
+
+```python
+uhubctl.discover_hubs(uhubctl_binary="sudo /usr/local/bin/uhubctl")
+uhubctl.Hub("1-1", uhubctl_binary="sudo /usr/local/bin/uhubctl")
+```