Autoformat; Remove old functions;

js/app.js

@@ -1,11 +1,3 @@
-Storage.prototype.setObj = function(key, obj) {
-    return this.setItem(key, JSON.stringify(obj))
-}
-
-Storage.prototype.getObj = function(key) {
-    return JSON.parse(this.getItem(key))
-}
-
 let game = new Vue({
     el: '#root',
     data: {