deployment.md in webpacker-3.2.1

- old
+ new
@@ -1,9 +1,9 @@
 # Deployment
 
 
-Webpacker hooks up a new `webpacker:compile` task to `assets:precompile`, which gets run whenever you run `assets:precompile`. If you are not using Sprockets you
-can manually trigger `bundle exec rails webpacker:compile` during your app deploy.
+Webpacker hooks up a new `webpacker:compile` task to `assets:precompile`, which gets run whenever you run `assets:precompile`. 
+If you are not using Sprockets `webpacker:compile` is automatically aliased to `assets:precompile`. Remember to set NODE_ENV environment variable to production during deployment or when running the rake task.
 
 The `javascript_pack_tag` and `stylesheet_pack_tag` helper method will automatically insert the correct HTML tag for compiled pack. Just like the asset pipeline does it.
 
 By default the output will look like this in different environments:
 