Added support for dynamic data binding using datasource and delegate
Use DownPickerDataSource to provide dynamic data to DownPicker
Use DownPickerDelegate to receive various events,
didSelectItem - provides event when any item is selected in picker
didPickedItem - provides event when done button is clicked and final selection is made
didCancelSelection - provides event when selection is cancelled
All the delegate method provides DownPicker instance to support multiple DownPicker events in single controller
Added support for dynamic data binding using datasource and delegate
Use DownPickerDataSource to provide dynamic data to DownPicker Use DownPickerDelegate to receive various events,
didSelectItem - provides event when any item is selected in picker didPickedItem - provides event when done button is clicked and final selection is made didCancelSelection - provides event when selection is cancelled All the delegate method provides DownPicker instance to support multiple DownPicker events in single controller