Added CS50 in Videos

Author: sakshi1499

README.md

@@ -160,6 +160,7 @@ Useful articles and learning resources.
 - [Why static types in Javascript?](https://www.youtube.com/watch?v=E5y2dozTkZU), by Preethi Kasireddy
 - [Using Elm to Prototype and Build Web Applications](https://www.youtube.com/watch?v=Lmg9v2U6-y4), by David Calavera
 - [Cracking the Coding Interview](https://www.youtube.com/playlist?list=PLI1t_8YX-ApvFsH-DaFmAmdJboAnbg08P), by Gayle Laakmann McDowell
+- [CS50 Lectures 2019](https://www.youtube.com/playlist?list=PLhQjrBD2T381L3iZyDTxRwOBuUt6m1FnW), by David J. Malan
 
 ## 🎙Podcasts