chatroom v1.2

Whoo, finally fix the bugs:

Sometimes there is 2 ">>>" in commandline
And get the other's message online

Now, enjoy the program!

chatroom v1.1

Update:

The client can receive the messages on line(before is you must send a message to get another people's message).
Add function receive_messages() to do receive the messages(Um).

Whoo, that's all

chatroom v1.0

First release that can use