Added license file.

LICENSE.txt

@@ -0,0 +1,17 @@
+License for Non-Commercial Use
+
+If this software is redistributed, this license must be included. The term 
+software includes any source files, documentation, executables, models, 
+and data.
+
+This software is available for general use by academic or non-profit, or 
+government-sponsored researchers. It may also be used for evaluation 
+purposes elsewhere. This license does not grant the right to use this 
+software or any derivation of it in a for-profit enterprise. For commercial 
+use, please contact the Tech Transfer Office at Carnegie Mellon University.  
+
+This software comes with no warranty or guarantee of any kind. By using 
+this software, the user accepts full liability.
+
+This license is written by Jean-Francois Lalonde, Copyright 2010.
+