blog.kempkens.io/_includes/footer.html

<span>
  &copy; {{ site.time | date: '%Y' }} {{ site.owner.name }}. Powered by <a href="http://jekyllrb.com">Jekyll</a> using the <a href="http://mademistakes.com/hpstr/">HPSTR Theme</a>.
  {% if site.source_url %}<br><a href="{{ site.source_url }}">Source on GitHub</a>{% endif %}
</span>