Move maintained examples to root, update README

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

README.md

@@ -1,25 +1,25 @@
-# Kubernetes Examples: releases.k8s.io/HEAD
+# Kubernetes Examples
 
-This directory contains a number of examples of how to run
-real applications with Kubernetes.
-
-Demonstrations of how to use specific Kubernetes features can be found in our [documents](../docs/).
+This directory contains a number of examples of how to run real applications
+with Kubernetes.
 
+Refer to the [Kubernetes documentation] for how to execute the tutorials.
 
 ### Maintained Examples
 
-Maintained Examples are expected to be updated with every Kubernetes
-release, to use the latest and greatest features, current guidelines
-and best practices, and to refresh command syntax, output, changed
-prerequisites, as needed.
+Maintained Examples are expected to be updated with every Kubernetes release, to
+use the latest and greatest features, current guidelines and best practices,
+and to refresh command syntax, output, changed prerequisites, as needed.
 
 |Name | Description | Notable Features Used | Complexity Level|
 ------------- | ------------- | ------------ | ------------ | 
-|[Guestbook](guestbook/) | PHP app with Redis | Replication Controller, Service | Beginner |
+|[Guestbook](guestbook/) | PHP app with Redis | Deployment, Service | Beginner |
 |[WordPress](mysql-wordpress-pd/) | WordPress with MySQL | Deployment, Persistent Volume with Claim | Beginner|
-|[Cassandra](storage/cassandra/) | Cloud Native Cassandra | Daemon Set | Intermediate 
+|[Cassandra](storage/cassandra/) | Cloud Native Cassandra | Daemon Set, Stateful Set, Replication Controller | Intermediate 
 
-* Note: Please add examples to the list above that are maintained.
+> Note: Please add examples that are maintained to the list above.
 
 See [Example Guidelines](guidelines.md) for a description of what goes
 in this directory, and what examples should contain.
+
+[Kubernetes documentation]: https://kubernetes.io/docs/tutorials/