Add proper export

Author: t-lock

index.js

@@ -0,0 +1,7 @@
+import { polyfill } from 'es6-object-assign'
+import { CalendarStyle } from './src/calendar-style'
+import DatePicker from './src/components/DatePickerAsyncWrapper.svelte'
+polyfill()
+
+export { CalendarStyle }
+export default DatePicker