README.md in nanoc-3.4.0 vs README.md in nanoc-3.4.1

@@ -14,9 +14,13 @@
 the following places will help you out:
 
 * The [discussion group](http://groups.google.com/group/nanoc)
 * The [IRC channel](irc://chat.freenode.net/#nanoc)
 
+## Versioning
+
+nanoc uses [Semantic Versioning](semver.org).
+
 ## Source Code Documentation
 
 The source code is located in `lib/nanoc` and is structured in a few
 directories: