Xaval v0.1

This is the very first release of Xaval.

I compiled and OpenCV for the web and created a simple page loading the OpenCV.js and using it to display an image on a canvas.

There is a bug though in the url resolution when loading OpenCV.js on the page, leading to 404 errors. For this reason the image loaded in the file input (and image tag) is actually not displayed on the canvas.