Creating QRCodes with rqr gem

qrcodes.rb

require 'rubygems'
require 'rqr'

string = "http://google.com"
mecard = "MECARD:N:Android OS;EMAIL:android@gmail.com;URL:http://google.com;;"

RQR::QRCode.create() do |qr|
  qr.save(string, "google.jpg")
end

RQR::QRCode.create() do |qr|
  qr.save(string, "google.png")
end

RQR::QRCode.create(:auto_extent => true) do |qr|
  qr.save(mecard, "mecard.jpg")
end

RQR::QRCode.create(:auto_extent => true) do |qr|
  qr.save(mecard, "mecard.png")
end