Ruby (based on EventMachine) proxy for html2canvas
ruby server.rb -sv
# Listening to Listening on port 8082 ...This proxy server is live at heroku.
Try it:
$.getJSON('http://html2canvas-ruby-proxy.herokuapp.com?url=http://inbound.anchorstl.com/wp-content/uploads/2013/01/rubyonrails.png&callback=?', function(data){ window.open(data,'_blank') })