implemented payment cancellation. Clicking on the 'Cancel Payment' on the Paystack payment page now closes the Payment webview.

Author: VhiktorBrown

README.md

@@ -25,7 +25,7 @@ The Flutter package that makes it super easy to integrate Paystack's payment gat
 ## :dart: Add dependency to pubspec.yaml:
 ``` dart
 dependencies:
-paystack_for_flutter: 1.0.1
+paystack_for_flutter: 1.0.2
 ```
 
 ## Then, import like this:

pubspec.yaml

@@ -1,6 +1,6 @@
 name: paystack_for_flutter
 description: The Flutter package that makes it super easy to integrate Paystack's payment gateway into your app with just few lines of code.
-version: 1.0.1
+version: 1.0.2
 homepage: https://github.com/VhiktorBrown/paystack_flutter
 documentation: https://github.com/VhiktorBrown/paystack_flutter/blob/master/README.md
 issue_tracker: https://github.com/VhiktorBrown/paystack_flutter/issues