Use the new Google Vision API to read QR code

From Robby Smet on 2015/08/31 14:20:16 +0000

I think it would be usefull to use the new Google Vision API (https://developers.google.com/vision/)
to read the QR codes. Now we have to install a 3rd party app (Barcode scanner)

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/9561264-use-the-new-google-vision-api-to-read-qr-code