clean directories containing only less than a given number of files
$ dircleaner -h
clean directories containing not more than the given number of files
Usage: dircleaner [OPTIONS] [DIRECTORIES]...
Arguments:
[DIRECTORIES]...
Options:
-n, --number-of-files <NUMBER_OF_FILES> [default: 2]
-h, --help Print help information
-V, --version Print version information