Issue while building in android about ionic2-calendar

[twinssbc]

@severus1990 You need to add below lines in main.prod.ts

import { CalendarComponent } from 'ionic2-calendar/calendar';
import { MonthViewComponent } from 'ionic2-calendar/monthview';
import { WeekViewComponent } from 'ionic2-calendar/weekview';
import { DayViewComponent } from 'ionic2-calendar/dayview';

[severus1990]

Thanks!! @twinssbc