title: Downloaded ZIP from from CodeSandbox (Vue.JS page) index.html produces blank page
body: <p><a href="https://codesandbox.io/s/vue2leaflet-custom-icons-npd4i?file=/App.vue" rel="nofollow noreferrer">My first ever Vue.JS / Vue2Leaflet app</a> works fine on codesandbox.io, but when I download the ZIP and open the index.html file, it is blank? </p>
  
  <p>Do I need to do something to the code base (compile? install additional dependencies?) before it works? I am looking for something I can upload on a server...</p>
  
  <p>Alternatively, how difficult would it be to convert this to a single .html page? (Single File Component?)</p>