www.opencompany.org/_includes/sharing-providers/googleplus

<div class="g-plusone" data-size="{{ site.sharing.googleplus.size }}" data-annotation="{{ site.sharing.googleplus.annotation }}" data-width="{{ site.sharing.googleplus.width }}"></div>

<script type="text/javascript">
  (function() {
    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
    po.src = 'https://apis.google.com/js/plusone.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
  })();
</script>