message: require protocol is false by default
diff: import isURL from 'validator/lib/isURL';
  -export default (value, [requireProtocol = true] = []) => {
  +export default (value, [requireProtocol = false] = []) => {
  const options = { require_protocol: !!requireProtocol, allow_underscores: true };
  if (Array.isArray(value)) {
  return value.every(val => isURL(val, options));
  