add ProfileField.EMAIL enum

[GoogleCodeExporter]

In your code there's no way to retrieve the user email (this is a recent 
facebook api).

you SIMPLY need to edit com.google.code.facebookapi.ProfileField and add:
EMAIL("email")

This is a quick fix so please create a new version!
I'm asking this because in java it is not possible to extend enums, so I can't 
fix this by myself without recompiling your jar.

Thank you very much

Original issue reported on code.google.com by n.chieff...@gmail.com on 16 Sep 2011 at 8:46