Update README.md

README.md

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 ![Screenshot](spindle.jpg)
 
-[![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons Licence" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.
+
 [![Platform](https://img.shields.io/badge/platform-win--64-brightgreen.svg)](https://www.microsoft.com/en-us/software-download/windows10ISO)
 [![Python](https://img.shields.io/badge/python-2.7-blue.svg)](https://www.python.org/download/releases/2.7/)
 [![Dependencies](https://img.shields.io/badge/dependencies-Abaqus%20CAE-red.svg)](https://www.3ds.com/products-services/simulia/products/abaqus/abaquscae/)