Excluded the output directory from being scanned and added a flag to specify which directory to scan.

[alemar99]

Hi! I've added two features to your tool:

• Exclude the output directory from being scanned: when using the tool and providing an output folder inside the current directory, I found it annoying to get the output folder scanned because it makes no sense and it wastes time.
• Add -d flag to specify which directories to scan: I think that this is a useful feature, so you don't have to be in the directory you are interested to scan. Solves issue #1

By the way, that's a pretty neat tool! Let me know, if you have questions and/or suggestions!