title: vue-socket.io socketio is not defined
body: <p>I'm trying to use vue-socket.io package here, so I did install it first then imported it in the app.js file, but in the Vue.use line the socketio throws a console error Uncaught ReferenceError: socketio is not defined:</p>
  
  <pre><code>npm install vue-socket.io --save
  
  import VueSocketio from 'vue-socket.io';
  Vue.use(VueSocketio, socketio('http://localhost:3000'), store);
  </code></pre>