env: fix golint warnings
example: add some Env examples
stdcopy: fix some golint warnings
container: add RestartPolicy to HostConfig

See dotcloud/docker#7414 (not released yet).
container: add some helper functions for restart policies
travis: bump go 1.3.1
container: Add ContainerAlreadyRunning and ContainerNotRunning error

Docker returns http.StatusNotFound (304) when trying to (start|stop)
a container that is (already|not) started.

container should return proper error for the HTTP status code.
Fix typo

alraedy -> already
authors: add Kim, Hirokuni
container: fix typo
container: standardize errors

Now every error uses a pointer receiver.
Support forcerm param for build image.
container: gofmt -s -w .
all: use goimports patter for importing
Merge branch 'master' of github.com:CMGS/go-dockerclient