USAGE
  $ celocli plugins:add PLUGIN... [--json] [-f] [-h] [-s | -v]
ARGUMENTS
  PLUGIN...  Plugin to install.
FLAGS
  -f, --force    Force npm to fetch remote resources even if a local copy exists on
                 disk.
  -h, --help     Show CLI help.
  -s, --silent   Silences npm output.
  -v, --verbose  Show verbose npm output.
GLOBAL FLAGS
  --json  Format output as json.
DESCRIPTION
  Installs a plugin into celocli.
  Uses npm to install plugins.
  Installation of a user-installed plugin will override a core plugin.
  Use the CELOCLI_NPM_LOG_LEVEL environment variable to set the npm loglevel.
  Use the CELOCLI_NPM_REGISTRY environment variable to set the npm registry.
ALIASES
  $ celocli plugins:add
EXAMPLES
  Install a plugin from npm registry.
    $ celocli plugins:add myplugin
  Install a plugin from a github url.
    $ celocli plugins:add https://github.com/someuser/someplugin
  Install a plugin from a github slug.
    $ celocli plugins:add someuser/someplugin