translate AvatarList (#123)

src/components/AvatarList/demo/simple.md

 ---
 order: 0
-title: 基础样例 
+title: 
+  zh-CN: 基础样例 
+  en-US: Basic Usage
 ---
 
-简单的用户头像列表。
+Simplest of usage.
 
 ````jsx
 import AvatarList from 'ant-design-pro/lib/AvatarList';

src/components/AvatarList/index.en-US.md

+---
+title: AvatarList
+order: 1
+cols: 1
+---
+
+A list of user's avatar for project or group member list frequently. If a large or small AvatarList is desired, set the `size` property to either `large` or `small` and `mini` respectively. Omit the `size` property for a AvatarList with the default size.
+
+## API
+
+### AvatarList
+
+| Property | Description | Type | Default |
+|----------|------------------------------------------|-------------|-------|
+| size | size of list | `large`、`small` 、`mini`, `default` | `default` |
+
+### AvatarList.Item
+
+| Property | Description | Type | Default |
+|----------|------------------------------------------|-------------|-------|
+| tips | title tips for avatar item | ReactNode\/string | - |
+| src | the address of the image for an image avatar | string | - |

src/components/AvatarList/index.md → src/components/AvatarList/index.zh-CN.md

 ---
-title: 
-  en-US: AvatarList
-  zh-CN: 用户头像列表
+title: AvatarList
 subtitle: 用户头像列表
 order: 1
 cols: 1