Fix authentication for 1.7.9+

[puigru]

Clients won't be able to join 1.7.9+ servers because of the new authentication protocol using UUIDs.

[xNul]

Does anyone know how to do this? I would love to use this library for a simple Minecraft chat I'm making.

[ddevault]

http://wiki.vg/Authentication

[Nirad]

@nabakin @XXLuigiMario Look at my fork it remained much work ..