message: don't localize unless a locale was defined in the options closes
diff: @@ -14,7 +14,7 @@ function install (_Vue, options = {}) {
  Vue = _Vue;
  Config.merge(options);
  - const { locale, dictionary, i18n } = Config.current;
  + const { dictionary, i18n } = Config.current;
  if (dictionary) {
  Validator.localize(dictionary); // merge the dictionary.
  @@ -27,8 +27,8 @@ function install (_Vue, options = {}) {
  });
  }
  - if (!i18n) {
  - Validator.localize(locale); // set the locale
  + if (!i18n && options.locale) {
  + Validator.localize(options.locale); // set the locale
  }
  Validator.setStrictMode(Config.current.strict);
  