erd.gemspec in erd-0.4.0 vs erd.gemspec in erd-0.5.0

@@ -1,6 +1,8 @@
 # -*- encoding: utf-8 -*-
+# frozen_string_literal: true
+
 require File.expand_path('../lib/erd/version', __FILE__)
 
 Gem::Specification.new do |gem|
   gem.authors       = ['Akira Matsuda']
   gem.email         = ['[e-mail]']
@@ -18,11 +20,15 @@
 
   gem.add_runtime_dependency 'rails-erd', ['>= 0.4.5']
   gem.add_runtime_dependency 'nokogiri'
 
   gem.add_development_dependency 'rails', '>= 3.2'
+  gem.add_development_dependency 'sass-rails'
+  gem.add_development_dependency 'jquery-rails'
+  gem.add_development_dependency 'coffee-rails'
   gem.add_development_dependency 'rake'
   gem.add_development_dependency 'test-unit-rails'
   gem.add_development_dependency 'capybara', '>= 2'
   gem.add_development_dependency 'rr'
   gem.add_development_dependency 'sqlite3'
+  gem.add_development_dependency 'selenium-webdriver'
 end