20/04
2016
This installer ensures that modules and themes end up in the correct directory:, (*1)
Your plugins themselves do not need to require societycms/installer. They only need to specify the type in their composer config:, (*2)
"type": "societycms-module"
or if you're building a theme:, (*3)
"type": "societycms-theme"
For more information check out the documentation at societycms.com, (*4)