magento-hackathon/E-MailPreview — pull request #10 by sebastianwagner (2014-06-06 06:34:20+00:00)
Title: suggest magento-composer-installer instead of requiring

The [FAQ](https://github.com/magento-hackathon/magento-composer-installer/blob/master/doc/FAQ.md#should-my-module-require-the-installer) of *magento-composer-installer* asks to only **suggest** the installer.