Update README.md

@@ -51,7 +51,7 @@ Get.off(NextScreen());
 To go to the next screen and cancel all previous routes (useful in shopping carts, polls, and tests)
 To go to the next screen and cancel all previous routes (useful in shopping carts, polls, and tests)
 
 
 ```dart
 ```dart
-Get.offAll(NextScreen());
+Get.offAll(NextScreen(), (Route<dynamic> route) => false));
 ```
 ```
 
 
 ### That's it, you've learned how to navigate between routes the default way.
 ### That's it, you've learned how to navigate between routes the default way.
@@ -72,7 +72,7 @@ Get.offNamed("/NextScreen");
 ```
 ```
 To navigate and remove all previous screens from the tree.
 To navigate and remove all previous screens from the tree.
 ```dart
 ```dart
-Get.offAllNamed("/NextScreen");
+Get.offAllNamed("/NextScreen", (Route<dynamic> route) => false));
 ```
 ```
 
 
 ## Using with Named Routes and And offering full flutter_web support (REQUIRED FOR NAMED ROUTES):
 ## Using with Named Routes and And offering full flutter_web support (REQUIRED FOR NAMED ROUTES):