Update README.md

README.md

@@ -6,4 +6,12 @@ Watch the build video ↓
 
 This device is made for Fusion360 but can be adapted to other CAD applications. Current features: Orbit, Pan, Home view and Fit to view.
 
-Build instructions → [Instructables](https://www.instructables.com/DIY-Space-Mouse-for-Fusion-360-Using-Magnets)
+Build instructions → [Instructables](https://www.instructables.com/DIY-Space-Mouse-for-Fusion-360-Using-Magnets)
+
+[![CC BY-NC-SA 4.0][cc-by-nc-sa-shield]][cc-by-nc-sa]
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+[![CC BY-NC-SA 4.0][cc-by-nc-sa-image]][cc-by-nc-sa]
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+[cc-by-nc-sa]: http://creativecommons.org/licenses/by-nc-sa/4.0/
+[cc-by-nc-sa-image]: https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png
+[cc-by-nc-sa-shield]: https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-lightgrey.svg