Add release notes for 0.4.0
Add release notes for 0.4.0

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