DeviseInvitable is a module for Devise that allow authenticated Devise resources to send invitation to email addresses.
After an invitation is accepted, the newly created Devise resource is automatically signed-in.
DeviseInvitable give the possibility to configure which resources are able to send invitations for which resources.
Example: You can configure that only Admins can send invitations to Developers, and only Developers can send invitation to Designers.
For the moment, please see the README.rdoc