Update README.md

Author: Alena Prokharchyk

README.md

@@ -1,6 +1,6 @@
 Hyperkube Images for Rancher
 ============================
 
-Rancher 2.0 is built off of Kubernetes upstream hyperkube images (gcr/google_containers/hyperkube).  This repo repackages the hyperkube images for Rancher.
+Rancher 2.x is built off of Kubernetes upstream hyperkube images (gcr/google_containers/hyperkube).  This repo repackages the hyperkube images for Rancher.
 
-There is one branch per minor release of Kubernetes.  For example v1.8, v1.9, v1.10, etc.
+There is one branch per minor release of Kubernetes.  For example v1.14, v1.15, v1.16, etc.