Update examples

examples/application-example/lib/foobar.rb

@@ -1,5 +1,8 @@
-require 'foobar/consumers'
-require 'foobar/version'
+# frozen_string_literal: true
+
+require 'foobar/application'
+require 'foobar/ping_consumer'
+require 'foobar/pong_consumer'
 
 module Foobar
 end