link to actual readme for webpack 4 configuration

Author: dbuchet

README.md

@@ -19,4 +19,7 @@ yarn add -D path-browserify crypto-browserify stream-browserify
 
 See [`src/App.js`](./src/App.js) for the code.
 
-### [view the live demo](https://react-sqljs-demo.ophir.dev/)
+### [view the live demo](https://react-sqljs-demo.ophir.dev/)
+
+### Using Webpack 4
+See [here](https://github.com/sql-js/react-sqljs-demo/tree/v1) for craco configuration using Webpack 4