V2.2.1 fixes saving problem in iOS 6

Symtom Diary version 2.2.1 is now available.  This is a minor update to fix a problem saving new diary entries under iOS6.  I know I said we would only support iOS7, but it seems there are alot of people using iOS6 still, and it was a major.

If anyone is still having trouble please let me know.

Thank you to Olivia who brought the problem to my attention.