docs: add grand-notifications (#1358)

Author: jdegand

README.md

@@ -1744,6 +1744,7 @@ to simplify usage and allow quick customization.
 * [toastify](https://github.com/andreasnicolaou/toastify) - Lightweight and customizable toast notifications for web applications.
 * [angular-toaster](https://github.com/damingerdai/angular-toaster) - Updated fork of [Angular2-Toaster](https://github.com/Stabzs/Angular2-Toaster).
 * [ng-toast-service](https://github.com/nhusby/ng-toast-service) - A simple, customizable notification service for Angular applications. This service shows notifications that slide onto the screen with configurable behavior.
+* [grand-notifications](https://github.com/rishi-rj-s/grand-notifications) - Beautiful, customizable toast notifications with artistic animations.
 
 #### Printing