Gemfile in middleman-react-0.13.1 vs Gemfile in middleman-react-0.13.3

@@ -1,9 +1,9 @@
 source 'https://rubygems.org'
 
 gemspec
 
 group :development do
-  gem "rake", "~> 0.9.2"
-  gem "rdoc", "~> 3.9"
-  gem "yard", "~> 0.8.0"
+  gem 'rake', '~> 0.9.2'
+  gem 'rdoc', '~> 3.9'
+  gem 'yard', '~> 0.8.0'
 end