Are aliases meant to be an array?

Allowing for a config to look like this:

```json
{
  "3000": {
    "name": "mysite",
    "aliases": ["www", "manage", "admin", "status"]
  }
}
```

to proxy to:

```json
{ "localhost": "127.0.0.1:80",
  "mysite.dev": "127.0.0.1:3000",
  "mysite.192.168.1.144.xip.io": "127.0.0.1:3000",
  ".*www.mysite.dev": "127.0.0.1:3000",
  ".*www.mysite.192.168.1.144.xip.io": "127.0.0.1:3000",
  ".*manage.mysite.dev": "127.0.0.1:3000",
  ".*manage.mysite.192.168.1.144.xip.io": "127.0.0.1:3000",
  ".*admin.mysite.dev": "127.0.0.1:3000",
  ".*admin.mysite.192.168.1.144.xip.io": "127.0.0.1:3000",
  ".*status.mysite.dev": "127.0.0.1:3000",
  ".*status.mysite.192.168.1.144.xip.io": "127.0.0.1:3000" }
```