my first commit, added empty README.md
added empty Makefile
added empty LICENSE file
deleted empty LICENSE file
added empty file shell.cpp
created empty file shell.cpp
added initial code to shell.cpp
added exec function and deleted fork() in main
added parse function
added ignore comments
added parsing features
added isCommand function
combined main and execute functions
updated Makefile
added file ls.cpp
added output formatting
added formating functions
some update?
Merge branch 'exec'
added ls target to Makefil