- Added shell-like interface
	- cp [file] - A program that copies files from your Unix directory
	into your "disk" directory
	- ls - A program that lists the directory on your "disk"
	- cat [file] - A program that reads a file from your "disk" and 	prints
	it out.
Merge branch 'master' of https://github.com/pscherer413/file_system.git