Make the usage message prettier

go/stars/stars.go

func init() {
	flag.StringVar(&config.directory, "directory", "github-stars", "The directory to store the repos in")
	flag.IntVar(&config.concurrency, "concurrency", 10, "The number of repos to update concurrently")
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "Usage: %s [flags]\n\n", os.Args[0])
		fmt.Fprintf(os.Stderr, "Fetches your GitHub stars and updates them as necessary.\n\n")
		flag.PrintDefaults()
		fmt.Fprintf(os.Stderr, "  -h, --help\n\tDisplay this message\n")
	}
}
func main() {