see docs/Instructions.txt for futher details

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GMAPPING Copyright (c) 2004 Giorgio Grisetti, 
Cyrill Stachniss, and Wolfram Burgard

This software is licensed under the "Creative Commons 
License (Attribution-NonCommercial-ShareAlike 2.0)" 
and is copyrighted by Giorgio Grisetti, Cyrill Stachniss, 
and Wolfram Burgard.
 
Further information on this license can be found at:
http://creativecommons.org/licenses/by-nc-sa/2.0/