Use collection, add index page

Author: holly-cummins

_config.yml

@@ -78,6 +78,9 @@ collections:
   versions:
     output: true
     permalink: /version/:path
+  migrations:
+    output: true
+    permalink: /migration/:path
 
 # Exclude from processing.
 # The following items will not be processed, by default. Create a custom list
@@ -124,7 +127,7 @@ defaults:
       permalink: /blog/:title/
   -
     scope:
-      path: "migration" # an empty string here means all files in the project
+      type: "migrations"
     values:
       layout: migration-guide
       toc: true

migrations.html

@@ -0,0 +1,11 @@
+---
+layout: base
+---
+
+{% assign doclist = site.migrations   %}
+    <ul>
+       {% for doc in doclist %}
+                <li><a href="{{ site.baseurl }}{{ doc.url }}">{{ doc.url }}</a></li>
+        {% endfor %}
+    </ul>
+