Datetime fix

README.md

@@ -465,6 +465,7 @@ from datetime import date, time, datetime, timedelta
 import pytz
 ```
 
+### Constructors
 ```python
 <D>  = date(year, month, day)
 <T>  = time(hour=0, minute=0, second=0, microsecond=0, tzinfo=None, fold=0)