Update README.md

README.md

@@ -97,4 +97,15 @@ RandomIterator iterator is a header-only library with no dependences.
 
 ## Licensing
 
-RandomIterator is released under the GNU General Public License version 3. Please see the file called COPYING.
+RandomIterator is released under the GNU General Public License version 3. Please see the file called LICENSE.
+
+## Contacting the developers
+
+Here’s what you should do if you need help or would like to contribute:
+
+* If you found a bug or what to ask any question, use GitLab issues.
+* If you have an idea, suggestion or whatever, use GitHub issues.
+* If you want to contribute, submit a pull request.
+
+## Acknowledgement
+