z0mt3c/grunt-beam — pull request #1 by dai-yamashita (2014-01-11 07:49:23+00:00)
Title: privateKey read support.

Hi @z0mt3c

support ssh connect privateKey.

example config
```
beam: {
stage: {
servers: [
{
host: 'xxx.xxx.xxx.xxx',
enterCredentials: false,
username: 'xxxx',
privateKey: './id_rsa',
passphrase: 'xxxxxx'
}
],
nodeUser: 'root',
nodeEnv: 'production',
targetPath: '/home/xxxx/public_html',
releaseArchive: '../out/backup.tgz'
}
}
```

please merge