hacks-guide-minimal-mistakes-theme/_includes/_footer.html

{% if site.owner.google.ad-client and site.owner.google.ad-slot %}
<div class="google-ads">
  <!-- 320 x 50 ad -->
  <script async src="http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
  <ins class="adsbygoogle"
       style="display:inline-block;width:320px;height:50px"
       data-ad-client="{{ site.owner.google.ad-client }}"
       data-ad-slot="{{ site.owner.google.ad-slot }}"></ins>
  <script>
  (adsbygoogle = window.adsbygoogle || []).push({});
  </script>
</div><!-- /.google-ads -->
{% endif %}

<span>&copy; {{ site.time | date: '%Y' }} {{ site.owner.name }}. Powered by <a href="http://jekyllrb.com" rel="nofollow">Jekyll</a> using the <a href="http://mademistakes.com/minimal-mistakes/" rel="nofollow">Minimal Mistakes</a> theme.</span>