Adding documentation for updating k8s.
Adding documentation for updating k8s.

kubernetes/minikube,warmchang/minikube,dalehamel/minikube,dlorenc/minikube,jimmidyson/minishift,cu12/minikube,endocode/minikube,warmchang/minikube,dongsupark/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,dims/minikube,dlorenc/minikube,Preeticp/minishift,r2d4/minikube,minishift/minishift,thatdocslady/minishift,aaron-prindle/minikube,budhrg/minishift,praveenkumar/minishift,dongsupark/minikube,warmchang/minikube,warmchang/minikube,minishift/minishift,dalehamel/minikube,r2d4/minikube,aaron-prindle/minikube,budhrg/minishift,aaron-prindle/minikube,jimmidyson/minishift,mikegrass/minikube,abbytiz/minikube,skipjaq/minikube,LalatenduMohanty/minishift,kubernetes/minikube,dims/minikube,kubernetes/minikube,dongsupark/minikube,dlorenc/minikube,dalehamel/minikube,dlorenc/minikube,praveenkumar/minishift,abbytiz/minikube,dlorenc/minikube,Preeticp/minishift,abbytiz/minikube,endocode/minikube,endocode/minikube,thatdocslady/minishift,cu12/minikube,mikegrass/minikube,dlorenc/minikube,thatdocslady/minishift,LalatenduMohanty/minishift,kubernetes/minikube,dlorenc/minikube,minishift/minishift,budhrg/minishift,kubernetes/minikube,mikegrass/minikube,praveenkumar/minishift,warmchang/minikube,LalatenduMohanty/minishift,r2d4/minikube,warmchang/minikube,Preeticp/minishift,skipjaq/minikube,warmchang/minikube,cu12/minikube,dims/minikube,jimmidyson/minishift,skipjaq/minikube