Update Rails version to support released Rails 4.2 version

Rob Bazinet · Rob Bazinet · commit 41543247964a · 2015-02-09T17:03:05.000-05:00
diff --git a/activeadmin.gemspec b/activeadmin.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'jquery-rails'
   s.add_dependency 'jquery-ui-rails',     '~> 5.0'
   s.add_dependency 'kaminari',            '~> 0.15'
-  s.add_dependency 'rails',               '>= 3.2', '< 4.2'
+  s.add_dependency 'rails',               '>= 3.2', '<= 4.2'
   s.add_dependency 'ransack',             '~> 1.3'
   s.add_dependency 'sass-rails'
 end
