{% if site.google_plus_one %}

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

{% endif %}