message: docs: fix locales
diff: @@ -3,11 +3,16 @@ import Locale from '../../src/locale';
  import Lazyload from '../../src/lazyload';
  import { get } from '../../src/utils';
  import { camelize } from '../../src/utils/format/string';
  +import enUS from '../../src/locale/lang/en-US';
  Vue.use(Lazyload, {
  lazyComponent: true
  });
  +Locale.add({
  + 'en-US': enUS
  +});
  +
  // helper for demo locales
  Vue.mixin({
  computed: {
  @@ -40,6 +45,14 @@ Vue.mixin({
  }
  });
  +window.vueRouter.afterEach(to => {
  + const { lang } = (to.meta) || {};
  +
  + if (lang) {
  + Locale.use(lang);
  + }
  +});
  +
  // add some basic locale messages
  Locale.add({
  'zh-CN': {
  