README.md in messenger-bot-0.1.7 vs README.md in messenger-bot-0.1.8

@@ -8,45 +8,52 @@
 
 ##Installation
 
 Bundler in your Gemfile.
 
-    gem 'messenger-bot'
+```ruby
+gem 'messenger-bot'
+```
 
 ##Quickstart
 
-    #config/initializers/messenger_bot.rb
+```ruby
+#config/initializers/messenger_bot.rb
+
+Messenger::Bot.config do |config|
+  config.access_token = <ACCESS_TOKEN>
+  config.validation_token = <VERIFY_TOKEN>
+  config.secret_token = <SECRET_TOKEN>
+end
+
+#config/routes.rb
+
+mount Messenger::Bot::Space => "/webhook"
+```
     
-    Messenger::Bot.config do |config|
-      config.access_token = <ACCESS_TOKEN>
-      config.validation_token = <VERIFY_TOKEN>
-    end
-    
-    #config/routes.rb
-    
-    mount Messenger::Bot::Space => "/webhook"
-    
-    
+   
 ##Example
 
 [Example](https://github.com/jun85664396/messenger-bot-rails/blob/master/example/messenger_bot_controller.rb)
 
-    # app/controllers/messenger_bot_controller.rb
-    
-      class MessengerBotController < ActionController::Base
-        def message(event, sender)
-          # profile = sender.get_profile
-          sender.reply({ text: "Reply: #{event['message']['text']}" })
-        end
-      
-        def delivery(event, sender)
-          #BlahBlah
-        end
-      
-        def postback(event, sender)
-          #BlahBlah
-        end
-      end
+```ruby
+# app/controllers/messenger_bot_controller.rb
+
+class MessengerBotController < ActionController::Base
+  def message(event, sender)
+    # profile = sender.get_profile
+    sender.reply({ text: "Reply: #{event['message']['text']}" })
+  end
+  
+  def delivery(event, sender)
+    #BlahBlah
+  end
+  
+  def postback(event, sender)
+    #BlahBlah
+  end
+end
+```
 
 ##Usage
 
 ###message(event, sender)
 * `event` - Hash containing the message event from Facebook [format](https://developers.facebook.com/docs/messenger-platform/webhook-reference#received_message)