Examples:
    $ packo create                              Scaffolds an npm package in the current directory.
    $ packo create awesome-package              Scaffolds the "awesome-package" package.
    $ packo create awesome-package --bin        Adds "bin/" dir for module that expose a CLI.
    $ packo module dataReader                   Creates "lib/dataReader.js" and "test/dataReader_spec.js"
    $ packo check                               Validates npm-shrinkwrap.json against the Node Security Project API
    $ packo check semver@4.2.0                  Checks the semver module, version 4.2.2 for vulnerabilities against the Node Security Project API
    $ packo check semver                        Checks the latest version of the semver module.