Update README.md

Author: bharathgs

README.md

@@ -30,15 +30,15 @@ sample input:
 from pydateparser import DateParser as parser
 
 text = 'Today is 10/12/16 and tomorrow is January 01 2019.'
-dp = parser(text, start_year=2000, end_year=2020, datetime_format=None)
+dp = parser(text, start_year=2000, end_year=2020, locale=None)
 ```
 sample output: 
 ```python
 dp.datetime
 
 #output
-[datetime(date='january 01 2019', token_span=(34, 49), token_index=(6, 8), format='%B %d %Y'),
- datetime(date='10/12/16', token_span=(9, 17), token_index=(2, 2), format='%d/%m/%y')]
+[datetime(date='january 01 2019', token_span=(34, 49), token_index=(6, 8), locale='%B %d %Y'),
+ datetime(date='10/12/16', token_span=(9, 17), token_index=(2, 2), locale='%d/%m/%y')]
 ```
 for an extended usage demo refer [this](https://github.com/GlibAI/pydateparser/blob/master/notebooks/lib-usage-notebook.ipynb) notebook.
 ## License