--- a/config/application.rb	Tue Mar 01 16:34:29 2016 +0900
+++ b/config/application.rb	Fri May 13 04:32:21 2016 +0900
@@ -1,4 +1,4 @@
-require File.expand_path("../boot", __FILE__)
+require_relative "boot"
 
 # Pick the frameworks you want:
 # require "active_model/railtie"
@@ -9,7 +9,7 @@
 # require "sprockets/railtie"
 require "rails/test_unit/railtie"
 
-require File.expand_path("../config_init", __FILE__)
+require_relative "config_init"
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.
@@ -28,7 +28,7 @@
     # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
-    config.middleware.delete "ActionDispatch::Cookies"
+    config.middleware.delete ActionDispatch::Cookies
 
     # this isn't actually used but railties checks this variable during boot.
     config.secret_key_base = "herp a derp"