Add nightly builds link to readme
diff --git a/README.md b/README.md
index 8f9150d..44aa3e4 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
 * **Documentation:** https://jpa.kapsi.fi/nanopb/docs/
 * **Downloads:** https://jpa.kapsi.fi/nanopb/download/
 * **Forum:** https://groups.google.com/forum/#!forum/nanopb
-
+* **Nightly builds:** https://jpa.kapsi.fi/jenkins/job/nanopb/
 
 
 Using the nanopb library