[new feature] add List component (#682)

docs/markdown/en-US/list.md

@@ -0,0 +1,66 @@
+## List
+A list component to show items and control loading status.
+
+### Install
+``` javascript
+import { List } from 'vant';
+
+Vue.use(List);
+```
+
+### Usage
+
+#### Basic Usage
+
+```html
+<van-list
+  v-model="loading"
+  :finished="finished"
+  @load="onLoad"
+>
+  <van-cell v-for="item in list" :key="item" :title="item + ''" />
+</van-list>
+```
+
+```js
+export default {
+  data() {
+    return {
+      list: [],
+      loading: false,
+      finished: false
+    };
+  },
+
+  methods: {
+    onLoad() {
+      setTimeout(() => {
+        for (let i = 0; i < 10; i++) {
+          this.list.push(this.list.length + 1);
+        }
+        this.loading = false;
+
+        if (this.list.length >= 40) {
+          this.finished = true;
+        }
+      }, 500);
+    }
+  }
+}
+```
+
+### API
+
+| Attribute | Description | Type | Default | Accepted Values |
+|-----------|-----------|-----------|-------------|-------------|
+| loading | Whether to show loading info，the `load` event will not be triggered when loading | `Boolean` | `false` | - |
+| finished | Whether loading is finished，the `load` event will not be triggered when finished | `Boolean` | `false` | - |
+| offset | The load event will be triggered when the distance between the scrollbar and the bottom is less than offset | `Number` | `300` | - |
+| loading-text | Loading text | `String` | `Loading...` | - |
+| immediate-check | Whether to check loading position immediately after mounted | `Boolean` | `true` | - |
+
+### Event
+
+| Event | Description | Arguments |
+|-----------|-----------|-----------|
+| load | Triggered when the distance between the scrollbar and the bottom is less than offset | - |

docs/markdown/en-US/waterfall.md

@@ -1,4 +1,5 @@
 ## Waterfall
+Note: Waterfall is deprecated and no longer maintained, please use the [List](#/zh-CN/list) component instead.
 
 ### Install