adding document mode

I've been thinking a lot about the treehouse and I feel like it's time to say goodbye to the tree format.

template/components/_feed.hbs

@@ -0,0 +1,20 @@
+{{#if page.feed}}
+<section class="feed">
+    <h1>{{ page.feed.title }}</h1>
+
+    {{#each page.feed.entries}}
+    <article>
+        <h2><a href="{{ url }}">{{{ title }}}</a></h2>
+        <div class="info">
+            <time datetime="{{ updated }}">{{ iso_date updated }}</time>
+            <ul class="categories">
+                {{#each categories as |category|}}
+                <li>{{ category }}</li>
+                {{/each}}
+            </ul>
+        </div>
+    </article>
+    {{/each}}
+</section>
+{{/if}}
+