Benry-ActionRunner is a Action runner or Task runner, like Rake or Gulp. Compared to Rake, actions of Benry-ActionRunner can take their own options and arguments. For example, `arun hello --lang=fr Alice` runs `hello` action with an option `--lang=fr` and an argument `Alice`. Benry-ActionRunner is also an example application of Benry-CmdApp framework. See https://kwatch.github.io/benry-ruby/benry-actionrunner.html for details.