Usage: bookstore [options]

  Options:

    -h, --help           output usage information
    -V, --version        output the version number
    -a, --author [name]  Book author's name
    -p, --price [price]  Book price
    -t, --title [name]   Book title
    -k, --kind [kind]    Kind of book
    -m, --max [price]    Maximum price for a book