command line

new features:
1. use following comannds in CMD to start GameClient, set id, or send
massage to server.

usage:    java massage.GameClient localhost 8080 20001
usage:    id:20001
usage:    20001:quit

2.use following comannds in CMD to connect server
usage:  telnet localhost 8080
usage:  id:20001
usage:  20001:quit

PS: the id must be five figures.