Update README.md

Author: AlexsandroSA

README.md

@@ -14,6 +14,7 @@
  - [30 Days, 30 Sites](http://www.subscribepage.com/30days30sites)
  - [Just Build Websites](https://github.com/melanierichards/just-build-websites)
  - [CSS Grid](https://cssgrid.io/)
+ - [30 Days of React Native](https://github.com/fangwei716/30-days-of-react-native)
 
 ## Solving Problems :dart: