update README

README.md

@@ -117,17 +117,17 @@ The repository includes example script to quickly try it out.
 ### Connect to a device and print its status whenever we receive a state change:
 
 ```
-python3 example.py -ip <ip> [-u <username>] [-p <password] -i
+python3 tools/example.py -ip <ip> [-u <username>] [-p <password] -i
 ```
 
 ### Connect to all the devices in `devices.json` at once and print their status:
 
 ```
-python3 example.py -d -i
+python3 tools/example.py -d -i
 ```
 ### Show usage help:
 ```
-python3 example.py -h
+python3 tools/example.py -h
 ```
 
 ## Contribution guidelines