Update to Initial Skeleton for Jekyll

Update a bunch of files to get ready for Jekyll.

_layouts/default.html

@@ -0,0 +1,8 @@
+{% include header.html %}
+<div class="row">
+    <div class="small-12 columns">
+        <h1>{{ page.title }}</h1>
+        {{ content }}
+    </div>
+</div>
+{% include footer.html %}