Adds tag pages example

_includes/postslist.njk

@@ -3,7 +3,7 @@
 	<li class="postlist-item{% if post.url == url %} postlist-item-active{% endif %}">
 		<a href="{{ post.url | url }}" class="postlist-link">{{ post.data.title }}</a>
 		<span class="postlist-date">{{ post.date | readableDate }}</span>
-		{% for tag in post.data.tags %}{% if tag != "post" %}<span class="tag">{{ tag }}</span>{% endif %}{% endfor %}
+		{% for tag in post.data.tags %}{% if tag != "post" and metadata.tagPages.indexOf(tag) > -1 %}<a href="/tags/{{ tag }}/" class="tag">{{ tag }}</a>{% endif %}{% endfor %}
 	</li>
 {% endfor %}
-</ol>
+</ol>