1) Setup instructions
To compile the client, run
	make client

To compile the server, run
	make server

Then, to run server, run 
	./EchoServer4 <port name>

Finally, to run the client, run
	./EchoClient4 <server address> <server port>

2) Run "help" for available commands

3) How the protocol was implemented:
	I used the templates provided by the textbook.

	The client uses a state machine, which governs the actions that are executed. By default, the state is in the SHELL state, or the interactive shell.
	The client parses the input by the user, and accordingly sends a payload string to the server.
	The payload string consists of the state, followed by the file (if applicable).
	A sample payload string would be "1file.mp3", which tells the server to add the file "file.mp3" (because 1 is the numeric value of the ADD state enumeration).
	
	Adding a file:
	1) Client sends payload "1filename.filetype" to server
	2) Server receives payload and sends back an acknowledgement echo to the client
	3) Server, then, reads the first character to determine the state.
	4) Server, then takes the rest of the payload string (which is the file name), and adds it to a text file (stored in the server).
		The text file is my version of a persistent data store, which was used so that in the event the server crashes, the central list isn't lost.
	5) Server wait for client's next command...

	Deleting a file:
	1) Client sends payload "2filenamd.filetype" to server
	2) Server receives payload and sends back an acknowledgement echo to the client
	3) Server, then, reads the first character to determine the state.
	4) Server, then reads through the file list and writes all entries into a temporary file EXCEPT the one that is to be deleted.
	5) The old file list is then deleted, and the temp list is renamed to the old filelist name
	6) Server waits for client's next command...

	Listing files:
	1) Client sends payload "3" to server
	2) Server receives the payload and sends back the size of the list file
	3) Client then instantiates a buffer of appropriate size, using the size that the server sent it, and sends an "ACK" acknowledgement
	4) Server then sends the file list to the client
	5) Client displays the file list
	6) Server waits for client's next command...


4) Things I took care of,
	filelist on an empty list
	Trying to delete a file that doesn't exist
	Invalid input (syntax errors) in the shell