Fix render blocking scripts

script-loader.js

function loadStyle(url, callback){
	var style = document.createElement("link")
	style.rel="stylesheet";
	if (style.readyState){
		style.onreadystatechange = function(){
			if (style.readyState == "loaded" || style.readyState == "complete"){
				style.onreadystatechange = null;
				callback();
			}
		};
	} else {
		style.onload = function(){
			callback();
		};
	}
	style.href = url;
	document.getElementsByTagName("head")[0].appendChild(style);
}
	
function loadScript(url, callback){
    var script = document.createElement("script")
    script.type = "text/javascript";
    if (script.readyState){
        script.onreadystatechange = function(){
            if (script.readyState == "loaded" || script.readyState == "complete"){
                script.onreadystatechange = null;
                callback();
            }
        };
    } else {
        script.onload = function(){
            callback();
        };
    }
    script.src = url;
	document.body.appendChild(script);
}

/* Minified Version: */
function loadStyle(c,b){var a=document.createElement('link');a.rel='stylesheet',a.readyState?a.onreadystatechange=function(){(a.readyState=='loaded'||a.readyState=='complete')&&(a.onreadystatechange=null,b());}:a.onload=function(){b();},a.href=c,document.getElementsByTagName('head')[0].appendChild(a);}
function loadScript(c,b){var a=document.createElement('script');a.type='text/javascript',a.readyState?a.onreadystatechange=function(){(a.readyState=='loaded'||a.readyState=='complete')&&(a.onreadystatechange=null,b());}:a.onload=function(){b();},a.src=c,document.body.appendChild(a);}

/* Usage: */
loadStyle("//maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css", function(){
	document.getElementById("init-style").outerHTML=''; /* Remove initial styles from your page */
	loadStyle("css/styles.css", function(){});
	loadStyle("//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css", function(){});
});

loadScript("//code.jquery.com/jquery-3.1.1.slim.min.js", function(){
	loadScript("//cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js", function(){
		loadScript("//maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js", function(){});
	});
});