https://www.html5rocks.com/zh/tutorials/webgl/jsartoolkit_webrtc/#toc-intro
https://github.com/argonjs/argon
https://github.com/jeromeetienne/AR.js/
https://github.com/jcmellado/js-aruco
js ar
原文：http://www.cnblogs.com/guochen/p/6700688.html
