Updated README

Author: eboatwright

README.md

@@ -50,5 +50,6 @@
 ## Helpful Sources
  - [Sebastian Lague's Chess Programming series](https://www.youtube.com/playlist?list=PLFt_AvWsXl0cvHyu32ajwh2qU1i6hl77c)
  - [The Chess Programming Wiki](https://www.chessprogramming.org/Main_Page)
+ - [BBC Engine Development](https://www.youtube.com/playlist?list=PLmN0neTso3Jxh8ZIylk74JpwfiWNI76Cs)
  - [Lynx](https://github.com/lynx-chess/Lynx/)
  - [Weiawaga](https://github.com/Heiaha/Weiawaga/)