Added Makefile, and "\n" character to TEST printf
changed .gitignore
Adjust Max_input_lenth to include null terminating char. (needed for
properly record cstring and printf)
Correct the max input validator(?)
Fix Max Input validation and some error handling
tokenize input and add builtin "exit" command
Revert "tokenize input and add builtin "exit" command"

This reverts commit aba8baabebfa49ef91d53e36b9f71f246ced96a1.
tokenize input and add builtin "exit" command. Fixed Makefile
Refactor error messages and add builtin command outline
Merge branch 'parse-input'