Gemfile in rails_autolink-1.1.5 vs Gemfile in rails_autolink-1.1.6

@@ -1,6 +1,13 @@
 source 'https://rubygems.org'
 
+# To test on latest Rails release, use the following:
 gem 'rails'
-gem 'arel'
-gem 'rack'
 gem 'minitest'
+
+# To test on Rails 4.0.x release, use the following e.g. for 4.0.1:
+# gem 'rails', '= 4.0.1'
+# gem 'minitest'
+
+# To test on Rails 3.2.x, use the following e.g. for 3.2.17:
+# gem 'rails', '= 3.2.17'
+# gem 'minitest', '= 4.2'