 	public func valueInUnit(unit: TimeUnit) -> Double {
 		switch unit {
 		case .Seconds: return seconds
+		case .Minutes: return minutes
+		case .Hours:   return hours
 		}
 	}
 }

	}


	public var seconds: Double {
		return rawValue
	}


public enum TimeUnit: Unit {
	case Seconds
	case Minutes
	case Hours
}


