Update MobileAppDevelopment.md

Author: gorbadil

MobileAppDevelopment.md

@@ -31,4 +31,6 @@
 - [How to do this in flutter](https://howtodothisinflutter.com/): This site provide cheat sheets for flutter and dart.
 - [Free flutter resources](https://github.com/londonappbrewery/Flutter-Course-Resources): Demo apps to get you started.    
 - [Bloc pattern](https://www.raywenderlich.com/4074597-getting-started-with-the-bloc-pattern): Flutter architectural pattern used to make the code scalable.This is a state management handling practice.  
-- [Factory method](https://medium.com/flutter-community/flutter-design-patterns-10-factory-method-c53ad11d863f): Factory method design pattern is a good practice to instantiate the class based on the parameters.                              
+- [Factory method](https://medium.com/flutter-community/flutter-design-patterns-10-factory-method-c53ad11d863f): Factory method design pattern is a good practice to instantiate the class based on the parameters.  
+- [React-Native](https://reactnative.dev/): React Native combines the best parts of native development with React, a best-in-class JavaScript library for building user interfaces.
+- [Expo](https://expo.dev/): Uses React-Native for build one JavaScript/TypeScript project that runs natively on all your users' devices.