Create a standalone k8s binary, capable of running a full cluster

See #108
This apiserver setup code looks wrong. https://github.com/GoogleCloudPlatform/kubernetes/blob/master/cmd/apiserver/apiserver.go is quite different.

Should extract code into a library-- perhaps in pkg/master/cmd/ or something.

Not much point to an all-in-one binary if it doesn't behave the same as our current binaries.