Added output files to gitignore
Added python outputs to gitignore
Added comments to the first half and fixed indentation for first half
Refactored AppIdent and refactor Int.toString :smile:
Refactored Let, If
refactored compile functions
finished refactoring and reordering the code
Commented and refactored run.sml
Added nicer status messages
Higher level commenting in compiler-llvm
Merge pull request #2 from lukemetz/cleanup

Clean Up and Refactorization