title: Vue leaflet open popup when loaded
body: <p>How can I make Vue-leaflet marker popup to be already open when loaded.</p>
  
  <pre><code>&lt;l-map style="height: 350px" :zoom="zoom" :center="center"&gt;
    &lt;l-tile-layer :url="url"&gt;&lt;/l-tile-layer&gt;
    &lt;l-marker :lat-lng="markerLatLng"&gt;
      &lt;l-popup&gt;Hello!&lt;/l-popup&gt;
    &lt;/l-marker&gt;
  &lt;/l-map&gt;
  </code></pre>
  
  <p>I have tried adding options like this</p>
  
  <p><code>&lt;l-popup :options="{closeOnClick: false,autoClose: false, openPopup:true}"&gt;Hello!&lt;/l-popup&gt;</code></p>
  
  <p>but it's not working.</p>