ttk.go
func Exit(format string, args ...interface{}) {
	termbox.Close()
	fmt.Fprintf(os.Stderr, format+"\n", args...)
	os.Exit(1)
}
func Exit(format string, args ...interface{}) {
	termbox.Close()
	fmt.Fprintf(os.Stderr, format+"\n", args...)
	os.Exit(1)
}
// Exit application but deinit first so that the terminal will not be corrupt.