Gemfile in bullet-4.10.0 vs Gemfile in bullet-4.11.0

@@ -1,16 +1,16 @@
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
 gemspec
 
 gem 'rails', github: 'rails/rails'
 gem 'sqlite3', platforms: [:ruby]
 gem 'activerecord-jdbcsqlite3-adapter', platforms: [:jruby]
 gem 'activerecord-import'
 
-gem "rspec"
-gem "guard"
-gem "guard-rspec"
+gem 'rspec'
+gem 'guard'
+gem 'guard-rspec'
 
 gem 'coveralls', require: false
 
 platforms :rbx do
   gem 'rubysl', '~> 2.0'