Seasons App app for iPhone and iPad

Countdown to the exact start time of the next seasons.

More features:
- for the northern and southern hemisphere
- astronomical (standard) and meteorologic (March 1st, June 1st, ...) seasons
- animated background
- add season events to calendar
- share begin of season events
- support for the iPhone 6 and 6+
- support for iPad multitasking mode

Runs on the Apple Watch:
- countdown to the next seasons
- for the northern and southern hemisphere
- astronomical (standard) and meteorologic (March 1st, June 1st, ...) seasons
- watch app and glance interface for a quick lookup