Finished file head comment in Connection.cpp

Connection.cpp still currently blocked by issue #41, issue #42

Still to do:

 ->Finish/comment Connection::send() 
 	(blocked by issue #41)
 	
 ->Finish/comment Connection::receive()
  	(blocked by issue #42)

 ->Finish/comment the == operator
 	Do we even need this?
 	
 ->Test functionality
 
 ->Remove any debug code
 

 Referenced issues:
 issue #6
 issue #9