GetLastOccurrenceDate method added. Returns the date of last occurrence of the event. This method uses NumberOfOccurrences property to decide the last date.
Merge branch 'GetLastOccurrenceDate' of https://github.com/raghav-khunger/ScheduleWidget into FrequencyTypeEnumAdditionalOptions
EveryWeekDay, EveryMonWedFri and EveryTuTh case added to GetLastOccurrenceDate method.