Merge branch 'master' into bugfix/docker-entrypoint-fail-on-error

cmd/util.go

@@ -219,7 +219,7 @@ func getKubeVersion() string {
 	if err != nil {
 		_, err = exec.LookPath("kubelet")
 		if err != nil {
-			exitWithError(fmt.Errorf("Version check failed: need kubectl or kubelet binaries to get kubernetes version"))
+			exitWithError(fmt.Errorf("Version check failed: need kubectl or kubelet binaries to get kubernetes version.\nAlternately, you can specify the version with --version"))
 		}
 		return getKubeVersionFromKubelet()
 	}