Removes --machines stuff from /etc/kubernetes/controller-manager, and now
no change is required in it from its default configuration.
Changes terminology from kubernetes minions to kubernetes nodes.
Fixes /etc/kubernetes/proxy duplication issue.
The User's guide is for anyone who wants to run programs and services on an exisiting Kubernetes cluster.
The Cluster Admin's guide is for anyone setting up a Kubernetes cluster or administering it.
The Developer guide is for anyone wanting to write programs that access the kubernetes API,
write plugins or extensions, or modify the core code of kubernetes.