Finally added input validation

Signed-off-by: parhamfh <parhamfh@kth.se>
Fixed util module and renamed module to parser 

Signed-off-by: parhamfh <parhamfh@kth.se>
Added output/ folder to github

Signed-off-by: parhamfh <parhamfh@kth.se>
Fixed typo in .gitignore

Signed-off-by: parhamfh <parhamfh@kth.se>
Removed old outcommented code and docstring

Signed-off-by: parhamfh <parhamfh@kth.se>
updated .gitignore

Signed-off-by: parhamfh <parhamfh@kth.se>