README.md

数字键盘 插件和组件调用

```html
      <list-item :item-height="90">
        <item>
          <div slot="name">数字键盘</div>
          <input slot="right" type="number" placeholder="输入" readonly v-model="value" @click="keyboradShow">
        </item>
      </list-item>
      
     <number-keyboard
       :show="true"
       title="数字键盘"
       extra-key="."
       @input="onInput"
       @delete="onDelete"/>     
      
      
      keyboradShow() {
        let vm = this;
        hlsPopup.showNumberKeyborad({
          title: '数字键盘',
          keyDown: (text) => {
            vm.onInput(text);
          },
          keyDelete: () => {
            vm.onDelete()
          },
        })
      },      
```