Gemfile in neo-rails-0.1.0 vs Gemfile in neo-rails-0.1.1

@@ -1,4 +1,16 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in neo-rails.gemspec
 gemspec
+
+rails_version = ENV['RAILS_VERSION']
+case rails_version
+when '4.0'
+  gem 'rails', '4.0.0.beta1'
+when '3.2'
+  gem 'rails', '~> 3.2.13'
+when NilClass
+  abort "Missing env RAILS_VERSION"
+else
+  abort "Rails version #{rails_version.inspect} not supported"
+end