Tool exits on attempt to read empty file

[rjcortese]

Currently when you pass a directory to check, if there is an empty file, attempting reader.Peek(261) will fail and the program will call os.Exit(1).
I have fixed this in a fork and now
matchedValues, count := adapter.FindFileMatches(file)
will return a count = 0 and then the code after that line will handle it correctly.
If that sounds agreeable to you, let me know and I will submit a pull request.

[ankane]

Hey @rjcortese, this would be great as well.