README.md in wego-0.1.4 vs README.md in wego-0.1.5

@@ -111,10 +111,10 @@
 using the API you can take users to continue the booking process at one of
 their partners' sites.
 
 ```ruby
 Wego::Booking.url_for(
-  search_id, hotel_id: hotel_id, room_rate_id: room_rate_id
+  search_id, hotel_id: hotel_id, room_rate_id: room_rate_id, locale: "en"
 )
 ```
 
 ## Development