Add resources for react js (#4092)

* added crash course for react 2020

* added a course series for react hooks

* added author:

free-courses-en.md

@@ -295,6 +295,8 @@
 #### React
 
 * [Start Using React to Build Web Applications](https://egghead.io/courses/react-fundamentals)
+* [React Crash Course 2020](https://www.youtube.com/watch?v=4UZrsTqkcW4) - freecodecamp
+* [React Hooks](https://www.youtube.com/playlist?list=PLZlA0Gpn_vH8EtggFGERCwMY5u5hOjf-h) - WebDevSimplified
 
 
 #### Redux