QR code scanner for wifi connection example
Description:
Enter the QR command to scan the qrcode of an AP to connect the wifi.

Configuration:
	1. Use "-DEXAMPLE=qr_code_scanner" to generate Make file
	2. Build and flash the binary to test

Execution:
    1. Prepare an AP with QR code or open the cellphone AP mode QR code
    2. enter QR and let AmebaPro2 sensor scan the QR code
    3. User will see the parser "decoded QR-Code symbol " and start to connect the AP

[Supported List]
	Supported :
	    RTL8730A