def errors
      parsed_errors = XmlSimple.xml_in(response.response.body)
      error_hash = {}
      parsed_errors['error'].each do |e|
        error_hash[e['field']] = e['content']
      end
      return error_hash
    end
def errors
      parsed_errors = XmlSimple.xml_in(response.response.body)
      error_hash = {}
      parsed_errors['error'].each do |e|
        error_hash[e['field']] = e['content']
      end
      return error_hash
    end
Returns a hash of errors keyed on field name.

 Return Example
   {
     :field_name_one => "Error message",
     :field_name_two => "Error message"
   }