我只是在阅读“DiscoverMeteor”一书，但路由捕获器中指定的命令mrt add router对我显示了一些错误
mrt添加路由器
smart.json changed.. installing from smart.json
✓ router
tag: https://github.com/tmeasday/meteor-router.git#v0.5.4.1
✓ page-js-ie-support
tag: https://github.com/tmeasday/meteor-page-js-ie-support.git#v1.3.5
✓ HTML5-History-API
tag: https://github.com/tmeasday/meteor-HTML5-History-API.git#v4.0.0
Done installing smart packages
Stand back while Meteorite does its thing
Done installing smart packages
Ok, everything's ready. Here comes Meteor!
router: updating npm dependencies -- connect...
=> Errors while scanning packages:
While building package router:
error: Can't install npm dependencies. Are you connected to the internet?
目前我使用 ubuntu 12.04 之前的所有其他示例，直到路由章节完美运行
我如何安装路由器？请帮助我