Minor cleanup in application example

examples/application-example/bin/foobar

@@ -1,8 +1,7 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-$LOAD_PATH.unshift(File.expand_path('../../lib', File.realpath(__FILE__)))
-require 'bunnyrun'
+$LOAD_PATH.unshift(File.expand_path('../lib', File.realpath(__dir__)))
 require 'foobar'
 
 Foobar::Application.run(argv: ARGV)

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

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'bunnyrun'
+
 require 'foobar/version'
 
 module Foobar