Add link to readthesource episode

Author: gaearon

README.md

@@ -33,6 +33,11 @@ Until [React Native works on top of React instead of shipping a fork of React](h
   - [`connect([mapStateToProps], [mapDispatchToProps], [mergeProps], [options])`](docs/api.md#connectmapstatetoprops-mapdispatchtoprops-mergeprops-options)
 - [Troubleshooting](docs/troubleshooting.md#troubleshooting)
 
+## How Does It Work?
+
+We do a deep dive on how React Redux works in [this readthesource episode](https://www.youtube.com/watch?v=VJ38wSFbM3A).  
+Enjoy!
+
 ## License
 
 MIT