README: stop linking to a 18 month old version

We are proud of the v1.0 release but lets give users context on the date
it was released and necessarily drive them to the actual release since
they should be using the latest release instead.

README.md

@@ -32,7 +32,7 @@ Kubernetes builds upon a [decade and a half of experience at Google running prod
 
 ### Kubernetes is ready for Production!
 
-With the [1.0.1 release](https://github.com/kubernetes/kubernetes/releases/tag/v1.0.1) Kubernetes is ready to serve your production workloads.
+Since the Kubernetes 1.0 release in July 2015 Kubernetes is ready for your production workloads.
 
 ### Kubernetes can run anywhere!