pom cleanup

pom.xml

@@ -184,4 +184,34 @@
          <scope>test</scope>
       </dependency>
    </dependencies>
+
+   <profiles>
+      <profile>
+         <id>release-sign-artifacts</id>
+         <activation>
+            <property>
+               <name>performRelease</name>
+               <value>true</value>
+            </property>
+         </activation>
+         <build>
+            <plugins>
+               <plugin>
+                  <groupId>org.apache.maven.plugins</groupId>
+                  <artifactId>maven-gpg-plugin</artifactId>
+                  <version>1.4</version>
+                  <executions>
+                     <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                           <goal>sign</goal>
+                        </goals>
+                     </execution>
+                  </executions>
+               </plugin>
+            </plugins>
+         </build>
+      </profile>
+   </profiles>
 </project>