Allow passing options to attributes the same way as to attribute

Author: biomancer

lib/jsonapi/resource.rb

@@ -278,8 +278,9 @@ def routing_resource_options
 
       # Methods used in defining a resource class
       def attributes(*attrs)
+        options = attrs.extract_options!.dup
         attrs.each do |attr|
-          attribute(attr)
+          attribute(attr, options)
         end
       end