timeline时间线

<!-- timestamp:时间戳 -->
<el-timeline >
    <el-timeline-item
      v-for="(activity, index) in activities"
      :key="index"
      :timestamp="activity.timestamp">
      {
   
   {activity.content}}
    </el-timeline-item>
  </el-timeline>

activities: [{
    
    
          content: '活动按期开始',
          timestamp: '2018-04-15'
        }, {
    
    
          content: '通过审核',
          timestamp: '2018-04-13'
        }, {
    
    
          content: '创建成功',
          timestamp: '2018-04-11'
        }]