text: 
  import React from 'react';
  import { Icon } from 'antd';
  import './style.less';
  
  export default ({onSignIn, onSignUp, onWrite}) => (
      <div className="unauth">
          <Icon type="setting" />
          <span className="signin" onClick={onSignIn}>登录</span>
          <span className="register" onClick={onSignUp}>注册</span>
          <span className="write" onClick={onWrite}><Icon type="edit" />写文章</span>
      </div>
  )