Gemfile in flipper-0.7.2 vs Gemfile in flipper-0.7.3

- old
+ new

@@ -10,10 +10,14 @@
 gem 'metriks', '~> 0.9.9'
 gem 'shotgun', '~> 0.9'
 gem 'statsd-ruby', '~> 1.2.1'
 gem 'rspec', '~> 3.0'
 gem 'rack-test', '~> 0.6.3'
-gem 'activesupport', '~> 4.2.0'
+gem 'sqlite3', '~> 1.3.11'
+gem 'rails', "~> #{ENV["RAILS_VERSION"] || '4.2.5'}"
+
+# for active support tests in test/ and only needed for ruby 2.2.x
+gem 'test-unit', '~> 3.0'
 
 group(:guard) do
   gem 'guard', '~> 2.12.5'
   gem 'guard-rspec', '~> 4.5.0'
   gem 'guard-bundler', '~> 2.1.0'