Gemfile in rainbow-1.99.2 vs Gemfile in rainbow-2.0.0

@@ -1,11 +1,11 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in rainbow.gemspec
 gemspec
 
-gem 'coveralls', :require => false
-gem 'mime-types', '< 2.0.0', :platforms => [:ruby_18]
+gem 'coveralls', require: false
+gem 'mime-types', '< 2.0.0', platforms: [:ruby_18]
 
 group :guard do
   gem 'guard'
   gem 'guard-rspec'
 end