Added comments
Delete shell-error.h
Delete shell.h
Delete shell.cpp
Delete shell-error.cpp
Create shell-error
Update parser.cpp
Rename shell-error to shell-error.cpp
Create shell.cpp
Renamed some things. Changed function signature on command constructor to only accept arguments. Removed many references to flags. Added a very basic REPL to the Shell class
Merge pull request #16 from MikeRyan52/develop

Develop