plugin のスケルトンを作成

$ bin/gpm install devtools

$ bin/plugin devtools new-plugin

Do you want to run "new-plugin" instead?  (yes/no) [no]:
> yes

Enter Plugin Name:
> hello

Enter Plugin Description:
> hello

Enter Developer Name:
> man29

Enter GitHub ID (can be blank):
>

Enter Developer Email:
> info@man29.net

SUCCESS plugin hello -> Created Successfully

composer update