[new feature] Cell support vue-router target route (#268)

* [bugfix] CouponList always show empty info

* [bugfix] add click feedback of buttons in components

* [Doc] add custom theme document

* [new feature] Notice bar support more props

* [bugfix] PullRefresh test cases

* [bugfix] unused NoticeBar style

* [bugfix] Swipe width calc error

* [Doc] english document of all action components

* [Doc] change document site path to /zanui/vant

* [Doc] fix

* [bugfix] uploader style error

* [bugfix] tabs document demo

* [new feature] Cell support vue-router target route

* [bugfix] add cell test cases

* update yarn.lock

docs/examples-docs/en-US/cell.md

@@ -92,6 +92,8 @@ Vue.component(CellGroup.name, CellGroup);
 | value | Right text | `String` | - | - |
 | label | Description below the title | `String` | - | - |
 | url | Link | `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 | `String` | `false` | - |
 | isLink | Whether to show link icon | `Boolean` | `false` | - |
 | required | Whether to show required mark | `Boolean` | `false` | - |
 

docs/examples-docs/zh-CN/cell.md

@@ -112,6 +112,8 @@ Vue.component(CellGroup.name, CellGroup);
 | value | 右侧内容 | `String` | - | - |
 | label | 标题下方的描述信息 | `String` | - | - |
 | url | 跳转链接 | `String` | - | - |
+| to | 路由跳转对象，同 `vue-router` 的 to | `String | Object` | - | - |
+| replace | 跳转时是否替换当前 history | `String` | `false` | - |
 | isLink | 是否展示右侧箭头 | `Boolean` | `false` | - |
 | required | 是否显示表单必填符号 | `Boolean` | `false` | - |