Create collection.html

Author: jyeh7

_layouts/collection.html

@@ -0,0 +1,10 @@
+---
+layout: archive
+---
+
+{{ content }}
+
+{% assign entries_layout = page.entries_layout | default: 'list' %}
+<div class="entries-{{ entries_layout }}">
+  {% include documents-collection.html collection=page.collection sort_by=page.sort_by sort_order=page.sort_order type=entries_layout %}
+</div>