make warning about snapshots bold

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1789637 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/fling/README.md b/fling/README.md
index 4fdebc1..2b39452 100644
--- a/fling/README.md
+++ b/fling/README.md
@@ -3,7 +3,7 @@
 
 This is a sample using _Sling Models_, _Sling Query_, _Sling Scripting Thymeleaf_, _Sling Validation_ (latest snapshot), _Sling Commons Messaging_ (latest snapshot) and _Sling Commons Messaging Mail_ (latest snapshot).
 
-As it is using some snapshots it might be unstable from time to time, feel free to ask on our mailing list if unsure!
+**As it is using some snapshots it might be unstable from time to time, feel free to ask on our mailing list if unsure!**
 
 * [Sling Models](http://sling.apache.org/documentation/bundles/models.html)
 * [Sling Query](https://github.com/Cognifide/Sling-Query)