Project 2 breakdown

Total: 

1. Simple version of chat program (50)
- Implement a command(or process) for a chat program(20)
	.No input parameter needed (-5)
	.Implemented a nice exit method (-5)

- Get input from user and send the string to the other shell(30)
	.Display the input/incoming string cleanly
	.Each string should be distinguishable

2. Advanced version of chat program(40)
- Login functionality implemented
	.Get user name and password from user
	.Any method except command line login parameter used to get login info (-10)
 
- Show prefix of each user using the user name(-10)

3. Documentation(10)
- Submit a Readme file

4. Extra bonus(20)
- Implemented display problem due to interference by incoming string from other port using semaphores or mailbox.