improve message prompting for auth token (#795)
improve message prompting for auth token (#795)


dcos/dcos-cli,kensipe/dcos-cli,mesosphere/dcos-cli,dcos/dcos-cli,mesosphere/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,kensipe/dcos-cli,kensipe/dcos-cli,dcos/dcos-cli,mesosphere/dcos-cli