func NewRootCmd(out io.Writer) *cobra.Command {
	cmd := &cobra.Command{
		Use:          "certgen",
		Short:        "certificate generator plugin for helm cli",
		Long:         globalUsage,
		SilenceUsage: true,
	}
	cmd.AddCommand(
		newGenerateCmd(out),
	)
	return cmd
}
NewRootCmd creates the root command object
package cmd
import (
	"io"
	"github.com/spf13/cobra"
)
var globalUsage = `Plugin for Kubernetes helm CLI.
This supports 
	$ helm certgen generate`