mellon.gemspec in mellon-1.1.1 vs mellon.gemspec in mellon-1.2.0

@@ -22,6 +22,7 @@
 
   spec.add_development_dependency "bundler", "~> 1.6"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
   spec.add_development_dependency "pry"
+  spec.add_development_dependency "yard"
 end