Copyright (c) 2014 Michaël Van Damme

sucker_punch-backgroundable is an Open Source project licensed under the terms of
the LGPLv3 license. Please see <http://www.gnu.org/licenses/lgpl-3.0.html>
for the license text.

Parts of sucker_punch-backgroundable were taken from the TorqueBox project, which is 
also licensed under LGPLv3 (see <http://torquebox.org/license/>).