update OpenShift on install (#975)

* update OpenShift on install

* update the title for Knative-with-Minishift.md and Knative-with-OpenShift.md as well

Author: vorburger

install/Knative-with-Minishift.md

@@ -1,8 +1,8 @@
-# Knative Install on OpenShift
+# Knative Install on Minishift
 
 This guide walks you through the installation of the latest version of
 [Knative Serving](https://github.com/knative/serving) on an
-[OpenShift](https://github.com/openshift/origin) using pre-built images and
+[OpenShift](https://github.com/openshift/origin) Minishift server using pre-built images and
 demonstrates creating and deploying an image of a sample "hello world" app onto
 the newly created Knative cluster.
 

install/Knative-with-OpenShift.md

@@ -1,4 +1,4 @@
-# Knative Install on OpenShift
+# Knative Install on OpenShift (via `oc cluster up`)
 
 This guide walks you through the installation of the latest version of
 [Knative Serving](https://github.com/knative/serving) on an

install/README.md

@@ -85,8 +85,8 @@ available observability plugins, to minimize the disk space used for install.
 
 - [Knative Install on Docker for Mac](Knative-with-Docker-for-Mac.md)
 - [Knative Install on Minikube](Knative-with-Minikube.md)
-- [Knative Install on Minishift](Knative-with-Minishift.md)
-- [Knative Install on OpenShift](Knative-with-OpenShift.md)
+- [Knative Install on OpenShift (minishift)](Knative-with-Minishift.md)
+- [Knative Install on OpenShift (oc cluster up)](Knative-with-OpenShift.md)
 
 **Custom install guide**