[Improvement] Support Vue.use to register a component (#401)

packages/submit-bar/index.vue

@@ -21,13 +21,11 @@
 
 <script>
 import VanButton from '../button';
-import { i18n } from '../locale';
+import { create } from '../utils';
 
-export default {
+export default create({
   name: 'van-submit-bar',
 
-  mixins: [i18n],
-
   components: {
     VanButton
   },
@@ -66,5 +64,5 @@ export default {
       }
     }
   }
-};
+});
 </script>