func main() {
	app := &cli.Command{
		Name:                  "mycli",
		Version:               "1.0.0",
		Usage:                 "Pure awesomeness.",
		EnableShellCompletion: true,
		Suggest:               true,
		Commands: []*cli.Command{
			{
				Name:  "level-up",
				Usage: "Become awesomer!",
				Flags: []cli.Flag{
					&cli.StringFlag{
						Name:      "some-file",
						Usage:     "I take a file",
						TakesFile: true,
						Required:  true,
					},
				},
				Action: func(ctx context.Context, cmd *cli.Command) error {
					return nil
				},
			},
		},
	}
	if err := app.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}