[new feature] Popup: support getContaienr (#611)

docs/markdown/en-US/actionsheet.md

@@ -61,6 +61,7 @@ Actionsheet will get another style if there is a `title` prop.
 | cancel-text | Text of cancel button | `String` | - | - |
 | overlay | Whether to show overlay | `Boolean` | - | - |
 | close-on-click-overlay | Whether to close when click overlay | `Boolean` | - | - |
+| get-container | Return the mount node for actionsheet | `Function` | - | `() => HTMLElement` |
 
 ### Data struct of actions
 

docs/markdown/en-US/popup.md

@@ -48,3 +48,4 @@ Use `position` prop to set popup display position
 | close-on-click-overlay | Close popup when click overlay | `Boolean` | `true` | - |
 | transition | Transition | `String` | `popup-slide` | - |
 | prevent-scroll | Prevent background scroll | `Boolean` | `false` | - |
+| get-container | Return the mount node for Popup | `Function` | - | `() => HTMLElement` |

docs/markdown/en-US/sku.md

@@ -90,6 +90,7 @@ Vue.use(Sku);
 | disable-stepper-input | Whether to disable stepper input | `Boolean` | `false` | - |
 | stepper-title | Quantity title | `String` | `Quantity` | - |
 | custom-stepper-config | Custom stepper related config | `Object` | `{}` | - |
+| get-container | Return the mount node for sku | `Function` | - | `() => HTMLElement` |
 
 ### Event
 

docs/markdown/zh-CN/actionsheet.md

@@ -72,6 +72,7 @@ export default {
 | cancel-text | 取消按钮文案 | `String` | - | - |
 | overlay | 是否显示遮罩 | `Boolean` | - | - |
 | close-on-click-overlay | 点击遮罩是否关闭`Actionsheet` | `Boolean` | - | - |
+| get-container | 指定挂载的 HTML 节点 | `Function` | - | `() => HTMLElement` |
 
 ### actions
 

docs/markdown/zh-CN/popup.md

@@ -48,3 +48,4 @@ export default {
 | close-on-click-overlay | 点击蒙层是否关闭 Popup | `Boolean` | `true` | - |
 | transition | transition 名称 | `String` | `popup-slide` | - |
 | prevent-scroll | 是否防止滚动穿透 | `Boolean` | `false` | - |
+| get-container | 指定弹出层挂载的 HTML 节点 | `Function` | - | `() => HTMLElement` |

docs/markdown/zh-CN/sku.md

@@ -91,6 +91,7 @@ Vue.use(Sku);
 | disable-stepper-input | 是否禁用sku中stepper的input框 | `Boolean` | `false` | - |
 | stepper-title | 数量选择组件左侧文案 | `String` | `购买数量` | - |
 | custom-stepper-config | 步进器相关自定义配置 | `Object` | `{}` | - |
+| get-container | 指定挂载的 HTML 节点 | `Function` | - | `() => HTMLElement` |
 
 ### Event