use in-page titles to generate sidebar nav

_data/samples.yml

@@ -1,8 +1,7 @@
 bigheader: "Samples"
 abstract: "A collection of example applications that show how to use Kubernetes."
 toc:
-- title: Samples
-  path: /docs/samples/
+- docs/samples.md
 
 - title: Storage / Database / KV
   section:
@@ -67,8 +66,7 @@ toc:
     path: https://github.com/kubernetes/kubernetes/tree/release-1.3/examples/guestbook-go/
   - title: GuestBook - PHP Server
     path: https://github.com/kubernetes/kubernetes/tree/release-1.3/examples/guestbook/
-  - title: MEAN stack on Google Cloud Platform
-    path: /docs/getting-started-guides/meanstack/
+  - docs/getting-started-guides/meanstack.md
   - title: MySQL + Wordpress
     path: https://github.com/kubernetes/kubernetes/tree/release-1.3/examples/mysql-wordpress-pd/
   - title: MySQL + Phabricator Server