Add support for Rails 5.0 to gemspec

lib/roqua-support/version.rb

 module Roqua
   module Support
-    VERSION = '0.1.21'
+    VERSION = '0.1.22'
   end
 end

roqua-support.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |gem|
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
 
-  gem.add_dependency 'activesupport', '>= 3.2', '< 5.0'
+  gem.add_dependency 'activesupport', '>= 3.2', '< 5.1'
   gem.add_dependency 'naught', '~> 1.0'
 
   gem.add_development_dependency 'bundler', '~> 1.0'