composer/installers — pull request #76 by bradydoll (2013-05-10 20:22:52+00:00)
Title: Add support for WordPress Must Use (MU) Plugins

Adds support for the WordPress must use plugins directory (mu-plugins). This directory is for WordPress plugins that are automatically loaded. This new installer type is called `wordpress-muplugin`.

See http://codex.wordpress.org/Must_Use_Plugins for more information about this directory.