added license plugin

pom.xml

@@ -379,6 +379,25 @@
                     <aggregate>true</aggregate>
                 </configuration>
 </plugin>
+
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>license-maven-plugin</artifactId>
+        <version>1.14</version>
+
+        <dependencies>
+          <dependency>
+            <groupId>org.apache.maven.doxia</groupId>
+            <artifactId>doxia-core</artifactId>
+            <version>1.6</version>
+          </dependency>
+          <dependency>
+            <groupId>org.apache.maven.doxia</groupId>
+            <artifactId>doxia-site-renderer</artifactId>
+            <version>1.6</version>
+          </dependency>
+        </dependencies>
+      </plugin>
     </plugins>
   </build>