+qr-sticker-paper.pdf: qr qr-sticker-paper.tex
+ pdflatex qr-sticker-paper.tex
+
+qr: qr.png
+ qrencode -s 6 -l L -v 1 -o qr.png "xib.me/rmmt"
+
+qrcode:
+ qrencode -l L -v 1 -o qr.png "goo.gl/JfVqUJ"
+
+qrcode-large:
+ qrencode -l L -v 1 -o qr-large.png "https://gitorious.org/ozzloy/challenge-bot"
+