Created stubs and basic structure.  Also implemented the exit function.
Completed type, delete, copy, and execute program.
Completed check, found error with the error, and made changes.
Added comments throughout the program to show how the shell program works.
entered all error messages.
Adding a couple of examples for executible files.  Files are test and loop.
Adding simple text file as control for shell testing.
Created a readme.txt file with instructions to run the shell program.