Countdown('2017-01-01 00:00', -1);
	// => An Object with keys: day,hour,minute,second
	// => Object {d: "131", h: "10", m: "22", s: "52"}
	Countdown('2037-01-01 00:00', 1);
	// => Object {d: "7173", h: "13", m: "35", s: "36"}