Update README.md

README.md

@@ -97,7 +97,9 @@ Reference evaluation metrics are also available in our paper.
 
 ## License
 
-This repository is licensed under [Attribution-NonCommercial 4.0 International](https://creativecommons.org/licenses/by-nc/4.0/deed.en).
+<a rel="license" href="https://creativecommons.org/licenses/by-nc/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://licensebuttons.net/l/by-nc/4.0/88x31.png" />
+
+This repository is licensed under [Attribution-NonCommercial 4.0 International](https://creativecommons.org/licenses/by-nc/4.0/deed.en)
 1. **Attribution** — Proper credit must be given, including a link to the license and an indication of any modifications made. This should be done in a reasonable manner, without implying endorsement by the licensor
 
 2. **NonCommercial** — The Algorithm may **NOT** be used for commercial purposes. This includes, but is not limited to, the sale, licensing, or integration of the Software into commercial products or services.