Gemfile in cutting_edge-0.0.1 vs Gemfile in cutting_edge-0.1

@@ -1,10 +1,15 @@
 source 'https://rubygems.org'
 
 gem 'redis', require: false
 
-gem 'rspec', '~> 3.9', :group => :development
-gem 'simplecov', :group => :development
+gem 'hashdiff'
+
+group :development do
+  gem 'rspec', '~> 3.9'
+  gem 'simplecov'
+  gem 'rack-test'
+end
 
 gem 'coveralls', '~>0.8.23', require: false
 
 gemspec
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