First working version of simple client and server.
Add setup.py.
Document server.
Add test folder.
Server unittest is one uge method but works... :-\
Added format methods to the ChatServer - for formatting messages before
sending to the clients.
Separated server tests into connection tests and broadcasting messages
test.
Added test that makes sure the server keeps working after one client
disconnects.
Gave up on writing tests for the client.

I think done! :)