func Template(file string) CreateOption {
	return CreateOption(fmt.Sprintf("-t %v", file))
}
Template returns a new create template option.
package rrd
import (
	"fmt"
	"time"
)
type CreateOption string
func Step(step time.Duration) CreateOption {
	return CreateOption(fmt.Sprintf("-s %v", int64(step/time.Second)))
}
func Start(start time.Time) CreateOption {
	return CreateOption(fmt.Sprintf("-b %v", start.Unix()))
}
func NoOverwrite() CreateOption {
	return CreateOption("-O")
}
func Source(file string) CreateOption {
	return CreateOption(fmt.Sprintf("-r %v", file))
}