Update 'Seeed Wio Terminal/README.md'

Seeed Wio Terminal/README.md

 
 # Examples
 ## WiFi Scan
-A simple program that continually scans for WiFi networks and prints them to the screen in a list. They are colour coded according to strength, and encrypted networks are marked with a \*.
+Requires the rpcWiFi library - just type that into the library search in Arduino IDE, and select the Seeed one. 
+A simple program that continually scans for WiFi networks and prints them to the screen in a list. They are colour coded according to strength, and encrypted networks are marked with a \*.