Add Webpack Bundle Analyzer to webpack config (#12)

js-packages/webpack-config/README.md

@@ -14,6 +14,18 @@ module.exports = config(options);
 
 To merge in custom Webpack config options, use [webpack-merge](https://www.npmjs.com/package/webpack-merge).
 
+### Webpack Bundle Analyzer
+
+You can view a visual representation of your JS Bundle by building with Webpack Bundle Analyzer.
+
+Add another build script to your `package.json` like the one below:
+
+```json
+{
+  "analyze": "npx cross-env ANALYZER=true npm run build"
+}
+```
+
 ## Typescript
 
 You'll need to configure a `tsconfig.json` file to ensure your IDE sets up Typescript support correctly.