fix 404 error propogation

Bug description: when one link returned a 404, all links after that were
getting labeled as 404s.

Fixed by resetting strings to 'ok' as part of try: loop.
removed old executable
added new executable zip
uploading new executable, bugfix 001

fixed bug: output labels all links "404" after first 404
Merge branch 'master' of https://github.com/theleftwich/link-scraper