example cannot run

[willin]

https://github.com/derek/node-yql/blob/master/examples/example.js#L20

      condition = response.query.results.channel.item.condition;
                                                     ^

TypeError: Cannot read property 'condition' of undefined
    at YQL.exec (/Users/willin/Documents/w2fs/beian-domain/demo/index.js:15:54)
    at /Users/willin/Documents/w2fs/beian-domain/demo/node_modules/yql/yql.js:276:9
    at /Users/willin/Documents/w2fs/beian-domain/demo/node_modules/yql/yql.js:243:17
    at parseJSON (/Users/willin/Documents/w2fs/beian-domain/demo/node_modules/yql/yql.js:335:5)
    at YQL._handleResponse (/Users/willin/Documents/w2fs/beian-domain/demo/node_modules/yql/yql.js:229:9)
    at Request.self.callback (/Users/willin/Documents/w2fs/beian-domain/demo/node_modules/request/request.js:121:22)
    at emitTwo (events.js:125:13)
    at Request.emit (events.js:213:7)
    at Request.<anonymous> (/Users/willin/Documents/w2fs/beian-domain/demo/node_modules/request/request.js:978:14)
    at emitOne (events.js:120:20)