Feat: update readme with performance / server rendering section

Author: RyanCCollins

README.md

@@ -27,6 +27,9 @@ Below are a few example apps that have been built with this project
     - [See the Code](https://github.com/RyanCCollins/restaurant-reviewer) 
     - [See the Working App](http://restaurant-reviewer-client.herokuapp.com/)
 
+### Server Rendering
+Need an extra performance boost with React Server Rendering, code chunking and lazy loading?  Take a look at [this branch](https://github.com/RyanCCollins/scalable-react-boilerplate/tree/feat_rc_server_rendering) for an example.
+
 ### Docker Support
 Coming soon the app will support Docker, which will contain a configured web server to make deployment of this boilerplate simple!  You can take a look at [this branch](https://github.com/RyanCCollins/scalable-react-boilerplate/tree/feat_rc_docker_config) for more details.