CONTRIBUTING: explain use of bump-version.sh
diff --git a/CONTRIBUTING b/CONTRIBUTING
index 5138510..2a69a53 100644
--- a/CONTRIBUTING
+++ b/CONTRIBUTING
@@ -52,4 +52,17 @@
 
 Contact the project developers via the project's "dev" list.
 
-* https://dev.eclipse.org/mailman/listinfo/emft-dev
\ No newline at end of file
+* https://dev.eclipse.org/mailman/listinfo/emft-dev
+
+## Bumping the version before a new release
+
+If you need to change the project version, use the provided "bump-version.sh"
+script.
+
+You will need to install Maven and xmlstarlet first. In an Ubuntu-based
+system, this can be done with "sudo apt-get install xmlstarlet".
+
+Once you have the dependencies installed, you can run the script to bump the
+version to 1.1.0 (as an example) as follows:
+
+  ./bump-version.sh 1.1.0