An example of embedding ActiveRecord in a cli app. Read the code!

Usage:
    prgm [OPTIONS] SUBCOMMAND [ARG] ...

Parameters:
    SUBCOMMAND                    subcommand
    [ARG] ...                     subcommand arguments

Subcommands:
    add                           Add item
    show                          Show item
    rm                            Remove item
    ls                            List items

Options:
    -h, --help                    print help