Use tycho p2 packager instead of ant script
diff --git a/site/pom.xml b/site/pom.xml
index 9e91d92..7fac7e0 100644
--- a/site/pom.xml
+++ b/site/pom.xml
@@ -91,62 +91,26 @@
 							</execution>
 						</executions>
 					</plugin>
-				
+
 					<!-- Publish the update site -->
 					<plugin>
-						<artifactId>maven-antrun-plugin</artifactId>
-						<version>1.6</version>
+						<groupId>org.eclipse.tycho</groupId>
+						<artifactId>tycho-p2-plugin</artifactId>
+						<version>${tycho-version}</version>
 						<executions>
 							<execution>
-								<id>publish-update-site</id>
-								<phase>install</phase>
-								
-								<configuration>
-									<target>
-									
-										<!-- Create directories -->
-										<mkdir dir="${publish.directory}" />
-										<mkdir dir="${update.site.directory}" />
-										
-										<!-- Prepare the publication -->
-										<mkdir dir="${update.site.directory}" />								
-										<delete includeemptydirs="true">
-											<fileset dir="${update.site.directory}">
-												<include name="**/*" />
-											</fileset>
-										</delete>
-																				
-										<!-- Copy the update site for aggregation -->
-										<copy includeemptydirs="false" todir="${update.site.directory}">
-					                     	<fileset dir="${project.build.directory}/checksumFix">
-					                        	<exclude name="META-INF" />
-					                        	<exclude name="META-INF/**" />
-					                       	</fileset>
-					                    </copy>
-										
-										<!-- Now, make a ZIP archive of the update site -->
-										<tstamp>
-											<format property="TODAY" pattern="yyyyMMddHHmmss" />
-										</tstamp>
-		              					
-		              					<!-- ZIP the signed update site -->
-		              					<zip basedir="${update.site.directory}" destfile="${publish.directory}/BPEL-Designer--${project.version}.${TODAY}.zip" />
-										
-										<!-- Clean up the signing directory -->
-										<delete includeemptydirs="true">
-											<fileset dir="${staging.directory}" includes="**/*" />
-										</delete>
-										
-									</target>
-								</configuration>
-								
+								<id>p2-metadata</id>
 								<goals>
-									<goal>run</goal>
+									<goal>p2-metadata</goal>
 								</goals>
+								<phase>package</phase>
 							</execution>
 						</executions>
+						<configuration>
+							<defaultP2Metadata>false</defaultP2Metadata>
+						</configuration>
 					</plugin>
-					
+
 					<!-- End of plug-ins -->
 				</plugins>
 			</build>