refacotred handlers to only take in the request during createResponse method. also added in the ability to enter in a different directory via the command line
finished getting the command line arguments wired up - can now enter in a port number and a current directory to use on the server
edited directory builder test
Merge pull request #13 from elizabethengelman/refactoring_handlers_325

branch name is inaccurate - this really allows for setting the port number and current directory as command line arguments