Add dates to blog and home (closes #46)

src/_includes/blog.html

@@ -6,6 +6,7 @@
     <div class="image">{% if post.image %}<img src="{% if site.featured-image-source %}{{ post.image | prepend: site.featured-image-source | absolute_url }}{% else %}{{ "" | absolute_url }}/assets/images/{{ post.image }}{% endif %}" alt="" />{% endif %}</div>
     <div class="content">
       <h2><a href="{{ post.url | relative_url }}" class="link">{{ post.title }}</a></h2>
+      <p class="h5">{{ post.date | date: '%B %d, %Y' }}</p>
       <p>{{ post.description }}</p>
     </div>
   </section>