relative time formatter

NSDate+Additions.m

- (NSString*)localizedRelativeTime {
	NSDateComponentsFormatter *formatter = [[NSDateComponentsFormatter alloc] init];
	formatter.allowedUnits = NSCalendarUnitHour | NSCalendarUnitMinute;
	formatter.unitsStyle = NSDateComponentsFormatterUnitsStyleShort;
	if (self.timeIntervalSinceNow < 60 && self.timeIntervalSinceNow > -60) {
		return NSLocalizedString(@"right now", @"from MapKit/Maps");
	} else if (self.timeIntervalSinceNow > 0) {
		NSString *start = [formatter stringFromDate:NSDate.date toDate:self];
		return [NSString stringWithFormat:NSLocalizedString(@"in %@", @"placeholder: minutes/hours"), start];
	} else {
		NSString *ago = [formatter stringFromDate:self toDate:NSDate.date];
		return [NSString stringWithFormat:NSLocalizedString(@"%@ ago", @"placeholder: minutes/hours"), ago];
	}
}