add utility for binding flags and building api server clients
Remove format specifiers with no options.
Merge pull request #2636 from erictune/service_env_var

	Remove format specifiers with no options.
Merge pull request #2437 from deads2k/deads-add-utility-to-bind-auth-flags

add utility for binding flags and building api server clients
docs: CoreOS worker nodes should not require a local etcd install
Merge pull request #2642 from kelseyhightower/update-to-0.5

docs: CoreOS worker nodes should not require a local etcd install
Support remote docker hosts on OS X.