[Doc] add some english documents (#220)

* [bugfix] Checkbox border render error in weixin browser

* [bugfix] TreeSelect dependency path error

* [bugfix] Swipe should clear autoplay timer when destroyed

docs/examples-docs/en-US/notice-bar.md

@@ -0,0 +1,57 @@
+## NoticeBar
+
+### Install
+``` javascript
+import { NoticeBar } from 'vant';
+
+Vue.component(NoticeBar.name, NoticeBar);
+```
+
+### Usage
+
+#### Basic Usage
+
+:::demo Basic Usage
+```html
+<van-notice-bar text="Only those who have the patience to do simple things perfectly ever acquire the skill to do difficult things easily." />
+```
+:::
+
+#### Disable scroll
+
+:::demo Disable scroll
+```html
+<van-notice-bar :scrollable="false">
+  Only those who have the patience to do simple things perfectly ever acquire the skill to do difficult things easily.
+</van-notice-bar>
+```
+:::
+
+#### Mode
+
+:::demo Mode
+```html
+<van-notice-bar mode="closeable">
+  Only those who have the patience to do simple things perfectly ever acquire the skill to do difficult things easily.
+</van-notice-bar>
+
+<van-notice-bar mode="link">
+  Only those who have the patience to do simple things perfectly ever acquire the skill to do difficult things easily.
+</van-notice-bar>
+```
+:::
+
+### API
+
+| Attribute | Description | Type | Default | Accepted Values |
+|-----------|-----------|-----------|-------------|-------------|
+| mode | Mode | String | `''` | `closeable` `link` |
+| delay | Animation delay (s) | Number | `1` | - |
+| speed | Scroll speed (px) | Number | `40` | - |
+| scrollable | Whether to scroll content | Boolean | `true` | - |
+
+### Event
+
+| Event | Description | Attribute |
+|-----------|-----------|-----------|
+| click | Triggered when click notice bar | - |