docs: add version tip in en docs (#4262)

src/button/README.md

@@ -92,27 +92,27 @@ Vue.use(Button);
 
 ### Props
 
-| Attribute | Description | Type | Default |
-|------|------|------|------|
-| type | Can be set to `primary` `info` `warning` `danger` | `string` | `default` |
-| size | Can be set to `large` `small` `mini` | `string` | `normal` |
-| text | Text | `string` | - |
-| color | Color, support linear-gradient | `string` | - |
-| icon | Left Icon | `string` | - |
-| tag | HTML Tag | `string` | `button` |
-| native-type | Native Type Attribute | `string` | `''` |
-| plain | Whether to be plain button | `boolean` | `false` |
-| block | Whether to set display block | `boolean` | `false` |
-| round | Whether to be round button | `boolean` | `false` |
-| square | Whether to be square button | `boolean` | `false` |
-| disabled | Whether to disable button | `boolean` | `false` |
-| loading | Whether show loading status | `boolean` | `false` |
-| loading-text | Loading text | `string` | - |
-| loading-type | Loading type, can be set to `spinner` | `string` | `circular` |
-| loading-size | Loading icon size | `string` | `20px` |
-| url | Link URL | `string` | - |
-| to | Target route of the link, same as to of vue-router | `string | object` | - |
-| replace | If true, the navigation will not leave a history record | `boolean` | `false` |
+| Attribute | Description | Type | Default | Version |
+|------|------|------|------|------|
+| type | Can be set to `primary` `info` `warning` `danger` | `string` | `default` | - |
+| size | Can be set to `large` `small` `mini` | `string` | `normal` | - |
+| text | Text | `string` | - | - |
+| color | Color, support linear-gradient | `string` | - | 2.1.3 |
+| icon | Left Icon | `string` | - | - |
+| tag | HTML Tag | `string` | `button` | - |
+| native-type | Native Type Attribute | `string` | `''` | - |
+| plain | Whether to be plain button | `boolean` | `false` | - |
+| block | Whether to set display block | `boolean` | `false` | - |
+| round | Whether to be round button | `boolean` | `false` | - |
+| square | Whether to be square button | `boolean` | `false` | - |
+| disabled | Whether to disable button | `boolean` | `false` | - |
+| loading | Whether show loading status | `boolean` | `false` | - |
+| loading-text | Loading text | `string` | - | - |
+| loading-type | Loading type, can be set to `spinner` | `string` | `circular` | - |
+| loading-size | Loading icon size | `string` | `20px` | - |
+| url | Link URL | `string` | - | - |
+| to | Target route of the link, same as to of vue-router | `string | object` | - | - |
+| replace | If true, the navigation will not leave a history record | `boolean` | `false` | - |
 
 ### Events
 

src/button/README.zh-CN.md

@@ -118,7 +118,7 @@ Vue.use(Button);
 | size | 尺寸，可选值为 `large` `small` `mini` | `string` | `normal` | - |
 | text | 按钮文字 | `string` | - | - |
 | color | 按钮颜色，支持传入`linear-gradient`渐变色 | `string` | - | 2.1.3 |
-| icon | 左侧图标名称或图片链接，可选值见 Icon 组件 | `string` | - | 2.0.0 |
+| icon | 左侧图标名称或图片链接，可选值见 Icon 组件 | `string` | - | - |
 | tag | HTML 标签 | `string` | `button` | - |
 | native-type | 原生 button 标签 type 属性 | `string` | - | - |
 | block | 是否为块级元素 | `boolean` | `false` | - |
@@ -129,7 +129,7 @@ Vue.use(Button);
 | hairline | 是否使用 0.5px 边框 | `boolean` | `false` | - |
 | loading | 是否显示为加载状态 | `boolean` | `false` | - |
 | loading-text | 加载状态提示文字 | `string` | - | - |
-| loading-type | 加载图标类型，可选值为`spinner` | `string` | `circular` | 2.0.0 |
+| loading-type | 加载图标类型，可选值为`spinner` | `string` | `circular` | - |
 | loading-size | 加载图标大小 | `string` | `20px` | - |
 | url | 跳转链接 | `string` | - | - |
 | to | 路由跳转对象，同 vue-router 的 to 属性 | `string | object` | - | - |