markers csv with other file

<!DOCTYPE html>
<html>
<head>
  <meta charset=utf-8 />
  <title>Example</title>
  <script src='https://api.tiles.mapbox.com/mapbox.js/v0.6.3/mapbox.js'></script>
  <link href='https://api.tiles.mapbox.com/mapbox.js/v0.6.3/mapbox.css' rel='stylesheet' />
  <style>
    body { margin:0; padding:0; }
    #map {
      position:absolute;
      top:0;
      left:0;
      right:0;
      bottom:0;
    }
  </style>
</head>
<body>

<div id='map'></div>
<script>
  var m = mapbox.map('map');
  m.addLayer(mapbox.layer().id('examples.map-4l7djmvo'));

// Create a markers layer with features from a CSV string.
  reqwest({
      url: 'markers.csv',
      type: 'text',
      success: function(resp) {
          var markerLayer = mapbox.markers.layer().csv(resp.responseText);
          // Add interaction to this marker layer. This
          // binds tooltips to each marker that has title
          // and description defined.
          mapbox.markers.interaction(markerLayer);
          m.addLayer(markerLayer);
      }
  });

m.zoom(6).center({ lat: 41.673, lon: 12.656 });
</script>

</body>
</html>

Modified http://api.tiles.mapbox.com/mapbox.js/v0.6.3/mapbox.js to a secure url

https://api.tiles.mapbox.com/mapbox.js/v0.6.3/mapbox.js