Read config onto dynamic type.

Hello,

Is it possible to read config using dynamic type (case class)? Something like
```
def read(clazz: Class[_], config: com.typesafe.config.Config, path: String): AnyRef = {
    ??? // config.as(path, clazz)
}
```
it can be assumed that `clazz` is a case class.
I played a little with no luck.