--- a/Gemfile	Fri Sep 05 23:10:53 2014 +0900
+++ b/Gemfile	Fri Sep 05 23:11:19 2014 +0900
@@ -1,15 +1,15 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 4.1.4'
+gem "rails", "~> 4.1.4"
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.0'
 # bundle exec rake doc:rails generates the API under doc/api.
-gem 'sdoc', '~> 0.4.0',      :group => :doc
+gem "sdoc", "~> 0.4.0",      :group => :doc
 
 # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
-gem 'spring',    :group => :development
+gem "spring",    :group => :development
 
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'