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

docs/demos/common.js

@@ -3,6 +3,7 @@
  */
 
 import Vue from 'vue';
+import i18n from 'packages/mixins/i18n';
 import { Locale, Toast, Dialog } from 'packages';
 import { DemoBlock, DemoSection } from 'vant-doc';
 import { camelize } from 'packages/utils';
@@ -23,7 +24,7 @@ const demoBaseMixin = {
 
 window.Toast = Toast;
 window.Dialog = Dialog;
-Vue.mixin(Locale.i18n);
+Vue.mixin(i18n);
 Vue.mixin(demoBaseMixin);
 Vue.component('demo-block', DemoBlock);
 Vue.component('demo-section', DemoSection);

docs/demos/views/layout.vue

@@ -42,9 +42,14 @@ export default {
 
 <style lang="postcss">
 .demo-layout {
-  .van-row {
+  .van-doc-demo-block {
     padding: 0 15px;
   }
+
+  .van-doc-demo-block__title {
+    padding-left: 0;
+  }
+
   .van-col {
     color: #fff;
     font-size: 13px;