README.md in tramway-event-1.9.29 vs README.md in tramway-event-1.9.30

@@ -10,10 +10,11 @@
 
 ```ruby
 gem 'tramway-event'
 gem 'carrierwave'
 gem 'more_html_tags'
+gem 'configus'
 ```
 
 #### 2. And then execute:
 ```bash
 $ bundle
@@ -44,9 +45,24 @@
 #### 6. Add events routes to the app
 
 *config/routes.rb*
 ```ruby
 mount Tramway::Event::Engine, at: '/'
+```
+
+#### 7. Add hosts in your environments via gem `configus`. [What is configus?](https://github.com/kaize/configus)
+
+*config/configus.rb*
+```ruby
+Configus.build Rails.env do
+  env :production do
+    host 'https://your-site-domain.com'
+  end
+  env :development do
+    host 'http://localhost:3000'
+  end
+  env :test, parent: :development
+end
 ```
 
 ## How-to
 
 ### Create event