alpha: executes command line input
Added .gitignore; changed executable name to 'mess'
directory structure-- related C files get their own directory
new dir: par; functions for parsing input
Directory structure finalized
made a prompt woo
basic semicolon syntax works! somewhat!
debugging strsep_save
semicolon separation works!
Revert "semicolon separation works!"

This reverts commit ade0ef1098b7baa99af2dabdd40a878b2ad553a6.
Revert "Revert "semicolon separation works!""

This reverts commit fb175a554d119f68a12e2f176680c9925684ee4b.
Merge branch 'master' of https://github.com/mks65-dw/shell