CLI to support packaged/namespaced commands e.g. app:create, app:delete

[leggetter]

I like the Heroku toolbelt CLI usage.

heroku help

heroku help
Usage: heroku COMMAND [--app APP] [command-specific-options]

Primary help topics, type "heroku help TOPIC" for more details:

  addons    #  manage addon resources
  apps      #  manage apps (create, destroy)
  auth      #  authentication (login, logout)
  config    #  manage app config vars
  domains   #  manage custom domains
  logs      #  display logs for an app
  ps        #  manage dynos (dynos, workers)
  releases  #  manage app releases
  run       #  run one-off commands (console, rake)
  sharing   #  manage collaborators on an app

Additional topics:

  account      #  manage heroku account options
  certs        #  manage ssl endpoints for an app
  db           #  manage the database for an app
  drains       #  display syslog drains for an app
  fork         #  clone an existing app
  git          #  manage git for apps
  help         #  list commands and display help
  keys         #  manage authentication keys
  labs         #  manage optional features
  maintenance  #  manage maintenance mode for an app
  pg           #  manage heroku-postgresql databases
  pgbackups    #  manage backups of heroku postgresql databases
  plugins      #  manage plugins to the heroku gem
  regions      #  list available regions
  stack        #  manage the stack for an app
  status       #  check status of heroku platform
  update       #  update the heroku client
  version      #  display version

heroku help apps

heroku help apps
Usage: heroku apps

 list your apps

Example:

 $ heroku apps
 === My Apps
 example
 example2

 === Collaborated Apps
 theirapp   [email protected]

Additional commands, type "heroku help COMMAND" for more details:

  apps:create [NAME]   #  create a new app
  apps:destroy         #  permanently destroy an app
  apps:info            #  show detailed app information
  apps:open            #  open the app in a web browser
  apps:rename NEWNAME  #  rename the app