removed Barby patch and updated Barby gem
Merge pull request #53 from jamesbrink/qr-support

Removed Barby patch and update gem
Support Code128 autodetection
Reformat the demo link
Merge pull request #54 from doomspork/support-code128-autodetect

Support Code128 auto-detection
Merge pull request #55 from doomspork/readme-demo-link

Reformat the demo link