mjml.gemspec in mjml-0.0.3 vs mjml.gemspec in mjml-0.0.4

@@ -19,6 +19,8 @@
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", "~> 1.11"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
+
+  spec.add_dependency "tilt", '>= 1.0.0'
 end