Add release-note block to PR template (#367)

alvaroaleman · kubermatic-bot · commit a015933498eb · 2018-10-20T19:37:56.000+02:00
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
@@ -4,3 +4,6 @@
 Fixes #
 
 **Special notes for your reviewer**:
+
+```release-note
+```
