Add support for baseurl

_includes/feed-footer.html

@@ -1 +1,4 @@
-<p><a href="{{ site.url }}{{ post.url }}">{{ post.title | xml_escape }}</a> was originally published by {{ site.owner.name }} at <a href="{{ site.url }}">{{ site.title }}</a> on {{ post.date | date: "%B %d, %Y" }}.</p>
+{% capture feed_footer %}
+  <p><a href="{{ absurl }}{{ post.url }}" rel="nofollow">{{ post.title }}</a> was originally published by {{ site.owner.name }} on <a href="{{ site.url }}" rel="nofollow">{{ site.title }}</a></p>
+{% endcapture %}
+{{ feed_footer | markdownify | xml_escape }}