LICENSE.txt

This code is licensed under Creative Commons Attribution-ShareAlike 3.0
http://creativecommons.org/licenses/by-sa/3.0/

You are free to share (copy, distribute and transmit the work), remix (adapt the work and redistribute it) and make commercial use 
of the work.

Conditions:
Attribution: You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Concretely, you should mention the authors (or their publications) in the new versions or if you use this software you should mention their authors or their publications.
Share Alike: If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.

Waiver — Any of the above conditions can be waived if you get permission from the copyright holder.
Public Domain — Where the work or any of its elements is in the public domain under applicable law, that status is in no way affected by the license.
Other Rights — In no way are any of the following rights affected by the license:
Your fair dealing or fair use rights, or other applicable copyright exceptions and limitations;
The author's moral rights;
Rights other persons may have either in the work itself or in how the work is used, such as publicity or privacy rights.
Notice — For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to http://creativecommons.org/licenses/by-sa/3.0/