Gemfile in message-driver-0.3.0 vs Gemfile in message-driver-0.4.0

@@ -10,26 +10,25 @@
 group :tools do
   gem 'guard'
   gem 'guard-bundler'
   gem 'guard-rspec'
   gem 'guard-cucumber'
+  gem 'guard-rubocop'
   gem 'pry'
-  platform :ruby_19 do
-    gem 'pry-debugger'
-  end
-  platform :ruby_20 do
-    gem 'pry-byebug'
-  end
+  gem 'pry-byebug', platform: [:mri_20, :mri_21]
   group :darwin do
     gem 'ruby_gntp'
     gem 'rb-fsevent'
     gem 'relish'
     gem 'lunchy'
   end
-end
+  gem 'yard'
+  gem 'redcarpet'
+  gem 'launchy'
+end if RUBY_VERSION >= '1.9.3'
 
-require File.expand_path("../test_lib/broker_config", __FILE__)
+require File.expand_path('../test_lib/broker_config', __FILE__)
 
 adapter = BrokerConfig.current_adapter.to_s
 version = BrokerConfig.adapter_version
 
 case adapter
@@ -40,5 +39,7 @@
     gem adapter
   else
     gem adapter.to_s, "~> #{version}"
   end
 end
+
+gem 'coveralls', require: false