Explain different results when using a RemoteConnection rather than local connection.

[krlawrence]

In section 6.11.4 where remote connections are explained it would be good to explain that the objects returned are not always the same as when directly attached to (say) a local TinkerGraph. One example of this would be vertex reference objects. The Java examples in the book do not make it clear that you have to be more precise in what you ask for when using a GLV over a remote connection.