Merge pull request #3264 from bluca/issue_pr_text

Problem: have to ask manually for relicensing grant

.github/PULL_REQUEST_TEMPLATE.md

@@ -38,3 +38,11 @@ Now, find your merge commit and mark it as drop and save. Finally rebase!
 
 If you are a new contributor please have a look at our contributing guidelines:
 [CONTRIBUTING](http://zeromq.org/docs:contributing)
+
+# FIRST TIME CONTRIBUTORS PLEASE NOTE
+
+Please add an additional commit with a relicensing grant.
+
+[Example](https://github.com/zeromq/libzmq/commit/fecbd42dbe45455fff3b6456350ceca047b82050)
+
+[More information on RELICENSING effort](https://github.com/zeromq/libzmq/tree/master/RELICENSE/README.md)