Gemfile in dox-1.0.0.alpha vs Gemfile in dox-1.0.0

@@ -1,4 +1,8 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in dox.gemspec
 gemspec
+
+rails_version = ENV['RAILS_VERSION'] || '5.0.1'
+
+gem 'rails', "~> #{rails_version}"