docs: improve docs and update api

one/docs/demo/directives/drag/sort-x.vue

@@ -19,7 +19,6 @@
       {{ item }}
     </div>
   </transition-group>
-  </section>
 </article>
 </template>
 
@@ -67,3 +66,7 @@ export default {
   transition: transform 200ms ease;
 }
 </style>
+
+<docs>
+可以通过 `v-drag.sort` 或 `v-drag="{ type: 'sort', ... }"` 来实现拖拽排序。
+</docs>

one/docs/demo/directives/tooltip/overflow.vue

@@ -0,0 +1,47 @@
+<template>
+<article>
+  <section>
+    <div
+      v-tooltip.overflow="loremIpsum"
+      class="item"
+    >
+      {{ loremIpsum }}
+    </div>
+    <div
+      v-tooltip.overflow="loremIpsum"
+      class="item"
+    >
+      Lorem upsum.
+    </div>
+  </section>
+</article>
+</template>
+
+<script>
+import { tooltip } from 'veui'
+
+const loremIpsum = 'Lorem ipsum dolor sit amet consectetur adipisicing elit. Dignissimos consequatur ad hic aspernatur maiores adipisci velit nostrum nobis, cum earum, incidunt repellendus ex! Fuga, fugit! Placeat quam ex minima laudantium.'
+
+export default {
+  directives: {
+    tooltip
+  },
+  data () {
+    return {
+      loremIpsum
+    }
+  }
+}
+</script>
+
+<style lang="less" scoped>
+.item {
+  display: inline-block;
+  margin-right: 12px;
+  width: 200px;
+  border: 1px solid #ccc;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+</style>