Update commands to reflect latest changes.
Fixes golint errors in pkg/health
Fixes golint errors in pkg/healthz
Rename a function according to go convention
Retry failed release downloads

gsutil cp is prone to failure during initial creation of a Kubernetes
cluster. This 'until' loop will keep trying as suggested in the 'gsutil
cp' documentation.
Add a caching minion registry.
Merge pull request #497 from bgrant0607/master

Answer 2 FAQs about motivations for pods.
Merge pull request #495 from ryfow/retry-gsutil-cp

Retry failed release downloads
Revert "Retry failed release downloads"
Merge pull request #498 from GoogleCloudPlatform/revert-495-retry-gsutil-cp

Revert "Retry failed release downloads"
Merge pull request #483 from brendandburns/health

Add a caching minion registry.
Correct godoc messages according to review comments
Adds initial volumes package; Supports host-dirs

Adds the framework for external volume mounts.

Currently supports bare host directory mounts.

Modifies the API to support host directory mounts from Volumes
instead of VolumeMounts.
Adds EmptyDirectory volume struct

Adds EmptyDirectory to volumes. This represents a directory
on the host, given to a pod that should not persist beyond.

The current draft does not cleanup after itself.
Rename kubelet_server*.go to server*.go
Merge pull request #502 from smarterclayton/rename_kubelet_server_files

Rename kubelet_server*.go to server*.go
Retrieve machine spec from cAdvisor
API modified to use source; now supports EmptyDirectory

API is now modified to use a Source struct to handle multiple volumes.

Two volume types are supported now, HostDirectory and EmptyDirectory.
Merge pull request #491 from monnand/cadvisor-update-3

Retrieve machine spec from cAdvisor
fix typo