Update README.md

Updated option preference details.

README.md

@@ -27,7 +27,9 @@ In addition to the weather platform, default sensors include different weather c
 
 Based on the latitude and longitude, location name is derived by reverse geo-coding. Sensors are then grouped based on the derived location name. For e.g. ```weather.<place_name>```,  ```sensor.<place_name>_temperature```, ```sensor.<place_name>_humidity``` etc.
 
-Integration options (Configuration --> Integrations --> <Weather Location> --> Configure) include Forecast Interval and other Weather Parameters. These weather parameters are used to determine the "Best Time Of The Day". Additionally there is an option to set "Daily mode" that will provide a view of max and min temperatures for the forecasts.
+Integration options (Configuration --> Integrations --> <Weather Location> --> Configure) include Forecast Interval and other Weather Parameters. These weather parameters are used to determine the "Best Time Of The Day". Additionally there is are two options
+- Set "Daily mode" that will provide a view of max and min temperatures for the forecasts. By default this is set to True.
+- Set "Lightning sensor" to display closes lightning strikes within a bounding box of 500kms. By default this is set to False.
 
 ## Original Author
 Anand Radhakrishnan [@anand-p-r](https://github.com/anand-p-r)