git add . ↔ to add all files in Working Dir to Staging
References
git commit --amend --no-edit↔ to fix & update previous Commit with extra Staging file (aftergit add .)
git add . ↔ to add all files in Working Dir to Staginggit commit --amend --no-edit ↔ to fix & update previous Commit with extra Staging file (after git add .)