Set calendar description file

Author: dilyanpalauzov

vdirsyncer/storage/dav.py

@@ -728,6 +728,7 @@ class CalDAVStorage(DAVStorage):
     _property_table = dict(DAVStorage._property_table)
     _property_table.update({
         'color': ('calendar-color', 'http://apple.com/ns/ical/'),
+        'description': ('calendar-description', 'urn:ietf:params:xml:ns:caldav'),
     })
 
     def __init__(self, start_date=None, end_date=None,