license specified for source code

readme.md

 # SMart SCHeduling
 
 [![coverage report](https://git-r3lab.uni.lu/NCER-PD/scheduling-system/badges/master/coverage.svg)](https://git-r3lab.uni.lu/NCER-PD/scheduling-system/commits/master)
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 
 ## Docker version
 If you'd like to try out the application without preparing the environment, you can use Docker (you must have _Docker_ and _docker-compose_ installed):

smash/package.json

@@ -7,7 +7,7 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "",
-  "license": "ISC",
+  "license": "GPLv3",
   "dependencies": {
     "admin-lte": "^2.3.7",
     "awesomplete": "^1.1.5",