docs(example): update readme

Author: e11sy

example/README.md

@@ -9,22 +9,62 @@ HAWK_TOKEN = ""
 
 Then, get it in node process through the [dotenv](https://github.com/motdotla/dotenv) package.
 
-```js
-//  webpack.config.js
-const HawkWebpackPlugin = require('@hawk.so/webpack-plugin');
-const dotenv = require('dotenv');
+```cjs
+//  webpack.config.cjs
 
-dotenv.config()
+const path = require("path");
+const webpack = require("webpack");
+const HtmlWebpackPlugin = require("html-webpack-plugin");
+const TerserPlugin = require("terser-webpack-plugin");
+const HawkWebpackPlugin = require("@hawk.so/webpack-plugin");
+
+/**
+ * Add ability to use .env file in webpack.config.cjs
+ * It is used to get HAWK_TOKEN from env variables
+ */
+require('dotenv').config();
+
+/**
+ * Create a random release key that will be used in HawkWebpackPlugin and in HawkCatcher
+ */
+const releaseKey = [...Array(10)].map(() => Math.random().toString(36)[2]).join('');
 
 module.exports = {
+  mode: "production",
+  entry: "./src/index.js",
+  output: {
+    filename: "bundle.js",
+    path: path.resolve(__dirname, "dist"),
+    clean: true,
+  },
   plugins: [
     new HawkWebpackPlugin({
-      integrationToken: process.env.HAWK_TOKEN
-    })
+      integrationToken: process.env.HAWK_TOKEN,
+      release: releaseKey,
+    }),
+    new HtmlWebpackPlugin({
+      template: "./index.html",
+    }),
+
+    /**
+     * Replace HAWK_TOKEN and RELEASE with actual values
+     * It is used for cathcer to get hawk token and release key
+     */
+    new webpack.DefinePlugin({
+      'HAWK_TOKEN': JSON.stringify(process.env.HAWK_TOKEN),
+      'RELEASE': JSON.stringify(releaseKey),
+    }),
   ],
-  devtool: 'hidden-source-map',
-}
+  optimization: {
+    minimize: true,
+    minimizer: [new TerserPlugin()],
+  },
+  devtool: "hidden-source-map",
+};
+
 ```
 
-The release id is not specified manually, so the plugin will use webpack compilation hash. 
-We'll access it through the `release.json` file, that will be created at the output directory.
+In this example we pass the manually created release key to the HawkWebpackPlugin.
+
+If the release id is not specified manually, then the plugin will use webpack compilation hash. 
+We'll could access it through the `release.json` file, that will be created at the output directory.