#2 [client] implementation

[Hermes]

usage:
./client -c conf_file

-read servers ip from conf_file (which is a plain text
file)
-connect to all servers (threads)
-while(1)
read buffer
send (buffer)+'\n'

Send "exit\n" to stop (listening) server.
User should choose to send a string to all servers, to
a range of servers (1-4), or to a list of servers (1,5,
7).