[new feature] add i18n support (#310)

* fix: Tabbar icon line-height

* [new feature] progress add showPivot prop

* [new feature] TabItem support vue-router

* [new feature] update document header style

* [Doc] add toast english ducoment

* [new feature] add i18n support

* feat: Extract demos from markdown

* feat: Base components demos

* [new feature] complete demo extract & translate

* [fix] text cases

* fix: add deepAssign test cases

* fix: changelog detail

* [new feature] AddressEdit support i18n

packages/contact-card/index.vue

@@ -3,13 +3,13 @@
     <div class="van-contact-card__content">
       <template v-if="type === 'add'">
         <van-icon class="van-contact-card__icon" name="add2" />
-        <div class="van-contact-card__text">{{ addText }}</div>
+        <div class="van-contact-card__text">{{ addText || $t('addText') }}</div>
       </template>
       <template v-else-if="type === 'edit'">
         <van-icon class="van-contact-card__icon" name="contact" />
         <div class="van-contact-card__text">
-          <div>联系人：{{ name }}</div>
-          <div>联系电话：{{ tel }}</div>
+          <div>{{ $t('name') }}：{{ name }}</div>
+          <div>{{ $t('tel') }}：{{ tel }}</div>
         </div>
       </template>
     </div>
@@ -19,15 +19,19 @@
 
 <script>
 import Icon from '../icon';
+import { i18n } from '../locale';
 
 export default {
   name: 'van-contact-card',
 
+  mixins: [i18n],
+
   components: {
     [Icon.name]: Icon
   },
 
   props: {
+    addText: String,
     type: {
       type: String,
       default: 'add'
@@ -37,10 +41,6 @@ export default {
     },
     tel: {
       type: String
-    },
-    addText: {
-      type: String,
-      default: '添加订单联系人信息'
     }
   }
 };