Merge pull request #3872 from donnes/patch-1

Use const instead of var in Vue instance

resources/assets/js/app.js

@@ -15,6 +15,6 @@ require('./bootstrap');
 
 Vue.component('example', require('./components/Example.vue'));
 
-var app = new Vue({
+const app = new Vue({
     el: 'body'
 });