README.md in ruby-maven-3.3.13 vs README.md in ruby-maven-3.9.0.pre1

@@ -54,10 +54,22 @@
 
 ## license ##
 
 it is licensed under (EPL-1.0)[https://www.eclipse.org/legal/epl-v10.html]
 
-## contributing #
+## building ##
+
+Prepare and pack the gem under ./pkg
+```
+./mvnw install
+```
+
+Push the gem to rubygems.org
+```
+./mvnw deploy -Prelease
+```
+
+## contributing ##
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Added some feature'`)
 4. Push to the branch (`git push origin my-new-feature`)