Use latest release plugin.

See
http://stackoverflow.com/questions/15166781/mvn-releaseprepare-not-committing-changes-to-pom-xml.

Author: gresrun

pom.xml

@@ -131,7 +131,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-release-plugin</artifactId>
-                <version>2.3.2</version>
+                <version>2.5</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>