una/template/embed_embedly_integration.html

<script>
(function(w, d){
    var id='embedly-platform', n = 'script';
    if (!d.getElementById(id)){
        w.embedly = w.embedly || function() {(w.embedly.q = w.embedly.q || []).push(arguments);};
        var e = d.createElement(n); e.id = id; e.async=1;
        e.src = ('https:' === document.location.protocol ? 'https' : 'http') + '://cdn.embedly.com/widgets/platform.js';
        var s = d.getElementsByTagName(n)[0];
        s.parentNode.insertBefore(e, s);
    }
})(window, document);
<bx_if:key>
$(document).ready(function () {
    embedly("defaults", {
        cards: {key: '__key__'}
    });
});
</bx_if:key>
function bx_embed_link(e)
{
    embedly('card', e);
}
</script>