Adding missing qrcode block and try to decode them using llqrcode.js
Prepare node project to decode qrcode using native zxing implementation
Try to decode qrcode using node xzing wrapper
WIP about barcode decoding
Revert "WIP about barcode decoding"

This reverts commit 34adbeafbf413d1e39da66a5d061f2613bb06be9.
Using http://zxing.org/w/decode.jspx service to decode QR code...