Update README.md

adds license link

Author: areyesl

README.md

@@ -10,7 +10,7 @@ More information about the 3D Tune-In Toolkit can be found in the open-source Gi
 
 ## Copyright and License
 
-The 3D Tune-In Toolkit VST plugin, Copyright (c) 2019 Imperial College London and University of Malaga, is distributed as open source under GPLv3. See LICENSE for further information.
+The 3D Tune-In Toolkit VST plugin, Copyright (c) 2019 Imperial College London and University of Malaga, is distributed as open source under GPLv3. See [LICENSE](LICENSE) for further information.
 
 Contact: Lorenzo Picinali (l.picinali@imperial.ac.uk) and Arcadio Reyes-Lecuona (areyes@uma.es).