Hotline Async Embed code

hotline.js

function callHotlineAsync(e,n){var t=document,a="script",c=t.createElement(a),l=t.getElementsByTagName(a)[0];c.src="//"+e,n&&c.addEventListener("load",function(e){n(null,e)},!1),l.parentNode.insertBefore(c,l)}
callHotlineAsync('//chat2.hotline.io/js/widget.js', function() {
    window.HotlineWidget.init({
        token: "TOKEN_HERE",
        host: "https://chat2.hotline.io"
    });
});