##Width watcher
Small script that allows to create width breakpoints and add listeners to them.
var watcher = WidthWatcher();
watcher.add(320, 480, [767, 768]);
var listener = function (mq) {
console.log(mq.media);
};
watcher.addListener(listener);
watcher.removeListener(listener);If you need to support IE9, you need to use matchMedia() polyfill.