Update examples

examples/application-example/lib/foobar/ping_consumer.rb

@@ -17,7 +17,9 @@ module Foobar
 
       publish('ping-pong', 'PONG', routing_key: 'pong')
       message.ack
-      logger.info
+
+      return unless options[:success_message]
+      logger.info("#{self.class}: #{options[:success_message]}")
     end
   end
 end