I18n (#600)

* update i18n

* update i18n

packages/artplayer/src/i18n/index.js

@@ -1,13 +1,5 @@
 import { mergeDeep } from '../utils';
-import zhCn from './zh-cn.json';
-import zhTw from './zh-tw.json';
-import pl from './pl.json';
-import cs from './cs.json';
-import es from './es.json';
-import fa from './fa.json';
-import fr from './fr.json';
-import id from './id.json';
-import ru from './ru.json';
+import zhCn from './zh-cn';
 
 export default class I18n {
     constructor(art) {
@@ -15,16 +7,10 @@ export default class I18n {
 
         this.languages = {
             'zh-cn': zhCn,
-            'zh-tw': zhTw,
-            pl: pl,
-            cs: cs,
-            es: es,
-            fa: fa,
-            fr: fr,
-            id: id,
-            ru: ru,
         };
 
+        this.language = {};
+
         this.update(art.option.i18n);
     }