Removed deprecated method
Work in progress to fix issues around this calendar library.
Fixed the way we were setting the calendar header view colours.
Added calendar view cell flags so that we don't call respondsToSelector every time which can be quite expensive.
Removed calling the appearance methods within table view cell which turns out to be really expensive.
Fixed calendar view weekday header.
Added PDTSimpleCalendarViewWeekDayHeader to public header.
Fixed delegate calls being called twice in the PDTSimpleCalendarViewCell.
Added reloadData method to reload the data.
Removed commented out code.
Merge pull request #1 from gwynantj/feature/wip

Merging WIP into master so we can pick this raw cocoapod up.