Update dynamoid.gemspec

Author: adamthedeveloper

dynamoid.gemspec

@@ -61,8 +61,10 @@ Gem::Specification.new do |s|
   s.rubygems_version = "1.8.24"
   s.summary = "Dynamoid is an ORM for Amazon's DynamoDB"
 
-  s.add_runtime_dependency(%q<active_model_serializers>)
+  
   s.add_runtime_dependency(%q<activemodel>, [">= 4"])
+  s.add_runtime_dependency(%q<active_model_serializers>)
+  s.add_runtime_dependency(%q<activemodel-serializers-xml>)
   s.add_runtime_dependency(%q<aws-sdk-resources>, ["~> 2"])
   s.add_runtime_dependency(%q<concurrent-ruby>, [">= 1.0"])
   s.add_development_dependency(%q<rake>, [">= 0"])