Add pom snippet for the service archive.

README.md

@@ -14,4 +14,9 @@ List of available templates:
 * [descriptor.xml](gCubeComponents/descriptor.xml)
     * It supports the creation of an archive with the binary artifacts generated by the content of the repository. Customizable if needed.
 
-All of them must be placed in the root directory of the Git repository.
+All of them must be placed in the root directory of the Git repository.
+
+We also provide few snippets useful for common tasks during the Maven build:
+
+* [service_archive.xml](gCubeComponents/snippets/service_archive.xml)
+    * Execute the maven-assembly-plugin to create the service archive for the component.

gCubeComponents/snippets/service_archive.xml

@@ -0,0 +1,18 @@
+<plugin>
+    <groupId>org.apache.maven.plugins</groupId>
+    <artifactId>maven-assembly-plugin</artifactId>
+    <configuration>
+        <descriptors>
+            <descriptor>descriptor.xml</descriptor>
+        </descriptors>
+    </configuration>
+    <executions>
+        <execution>
+            <id>servicearchive</id>
+            <phase>install</phase>
+            <goals>
+                <goal>single</goal>
+            </goals>
+        </execution>
+    </executions>
+</plugin>