activesupport4.gemfile in clockwork-0.7.1

- old
+ new

@@ -1,4 +1,10 @@
 source 'https://rubygems.org'
 
+platforms :rbx do
+  gem 'rubysl', '~> 2.0'
+  gem 'rubysl-test-unit'
+  gem 'rubinius-developer_tools'
+end
+
 gem 'activesupport', '~> 4.0.0'
 gemspec :path=>"../"