Update README.md

README.md

@@ -86,7 +86,8 @@ You can also document commands to lint the code or run tests. These steps help t
 Show your appreciation to those who have contributed to the project.
 
 ## License
-For open source projects, say how it is licensed.
+
+[GPL-3.0](https://opensource.org/licenses/GPL-3.0)
 
 ## Project status
 If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.