code: function BaiduPush (options) {
      if (!options || !options.apiKey || !options.secretKey) {
          throw new Error('apiKey and secretKey is required');
      }
      this.options = options;
      return this;
  }
docs: /*
  百度推送类
  
  @param {Object} options 百度推送服务配置: apiKey, secretKey
  @return {Object} 百度推送对象实例