当我尝试在 ubuntu(11.04) 上安装流星时：
**$ curl https://install.meteor.com | /bin/sh**
我收到以下消息：
` % Total % Received % Xferd 平均速度 时间 时间 当前 Dload 上传总花费 左速度 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:- - 0curl: (60) SSL 证书问题，验证 CA 证书是否正常。详细信息：错误：14090086：SSL 例程：SSL3_GET_SERVER_CERTIFICATE：证书验证失败更多详细信息：http ://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.`
如何解决这个问题？