fix for ruby saml Enable multiple attributes in SAML XML

gistfile1.rb

      def attributes
        @attr_statements ||= begin
          result = {}

          stmt_element = xpath_first_from_signed_assertion('/a:AttributeStatement')
          return {} if stmt_element.nil?

          stmt_element.elements.each do |attr_element|
            name  = attr_element.attributes["Name"]
            value = attr_element.elements.map { |e| e.text }

            if value.size == 1
              result[name] = value.first
            else
              result[name] = value
            end
          end

          result.keys.each do |key|
            result[key.intern] = result[key]
          end

          result
        end
     end