Return true if browser support CSS feature

feature detect

// prop - transition, animation etc.
function featureDetect(prop) {
    prop = prop.replace(/-(\w)/g, function (s, g) {
        return g.toUpperCase()
    });
    var pre = ',Icab,Khtml,Moz,Ms,O,Webkit'.split(',');

    for (var i = 0; i < pre.length; ++i) {
        if (i == 1) {
            prop = prop.slice(0, 1).toUpperCase() + prop.slice(1);
        }

        if (pre[i] + prop in document.documentElement.style) {
            return true;
        }
    }

    return false;
}