[TIMOB-3035]Initial implementation for EventKit
[TIMOB-3035] Implementing recurrence rule for events.
[TIMOB-3035] Implementing save and remove functionality for events.
[TIMOB-3035] Merging with master
[TIMOB-3035]Documentation and cleaning up code.
[TIMOB-3035]Adding doc's for add/removeRecurrenceRule and `change` event.
[TIMOB-3035]Doc bugs
[TIMOB-3035] doc bugs.
[TIMOB-3035]Addressing code review comments.
[TIMOB-3035] Resyncing with master
[TIMOB-3035]More fixes.
[TIMOB-3035] Resyncing with master again.
Merge pull request #3951 from srahim/timob-3035

[TIMOB-3035]iOS: EventKit module