Issues/2424 Update plugins configuration example

src/content/configuration/plugins.md

@@ -8,7 +8,7 @@ contributors:
   - byzyk
 ---
 
-The `plugins` option is used to customize the webpack build process in a variety of ways. webpack comes with a variety built-in plugins available under `webpack.[plugin-name]`. See [this page](/plugins) for a list of plugins and documentation but note that there are a lot more out in the community.
+The `plugins` option is used to customize the webpack build process in a variety of ways. webpack comes with a variety built-in plugins available under `webpack.[plugin-name]`. See [Plugins page](/plugins) for a list of plugins and documentation but note that there are a lot more out in the community.
 
 T> Note: This page only discusses using plugins, however if you are interested in writing your own please visit [Writing a Plugin](/development/how-to-write-a-plugin/).
 
@@ -17,14 +17,14 @@ T> Note: This page only discusses using plugins, however if you are interested i
 
 `array`
 
-A list of webpack plugins. For example, when multiple bundles share some of the same dependencies, the `CommonsChunkPlugin` could be useful to extract those dependencies into a shared bundle to avoid duplication. This could be added like so:
+A list of webpack plugins. For example, [`DefinePlugin`](/plugins/define-plugin/) allows you to create global constants which can be configured at compile time. This can be useful for allowing different behavior between development builds and release builds.
 
 ```js
 module.exports = {
   //...
   plugins: [
-    new webpack.optimize.CommonsChunkPlugin({
-      //...
+    new webpack.DefinePlugin({
+      // Definitions...
     })
   ]
 };
@@ -42,17 +42,6 @@ var DashboardPlugin = require('webpack-dashboard/plugin');
 module.exports = {
   //...
   plugins: [
-    // build optimization plugins
-    new webpack.optimize.CommonsChunkPlugin({
-      name: 'vendor',
-      filename: 'vendor-[hash].min.js',
-    }),
-    new webpack.optimize.UglifyJsPlugin({
-      compress: {
-        warnings: false,
-        drop_console: false,
-      }
-    }),
     new ExtractTextPlugin({
       filename: 'build.min.css',
       allChunks: true,