title: Can we make ol.Overlay draggable on OpenLayers 3?
body: <p>I am trying to make that an ol.overlay is draggable, but I am not able to do it. I have found this example (<a href="http://openlayers.org/en/v3.2.1/examples/drag-features.html?q=drag" rel="nofollow">http://openlayers.org/en/v3.2.1/examples/drag-features.html?q=drag</a>), but it is done using ol.Features and what I need is an overlay, since I can use a custom -html div- for showing what I need. I have also found a very interesting example that is able to do what I want, but it is done using google maps v3 and I need it for ol3.<br>
  Thanks in advance.</p>