Fixed an issue where the code was expecting parameters as a hash when…

… in fact they are previously converted to an array

lib/google/api_client/reference.rb

@@ -63,7 +63,7 @@ def initialize(options={})
         self.headers = options[:headers] || {}
         if options[:media]
           self.media = options[:media]
-          upload_type = parameters['uploadType'] || parameters['upload_type']
+          upload_type = self.parameters.find{|a| ['uploadType', 'upload_type'].include?(a[0])}[1]
           case upload_type
           when "media"
             if options[:body] || options[:body_object]