Explain use of helper plugin

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@767059 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom/pom.xml b/pom/pom.xml
index 27d0ddb..ad74806 100644
--- a/pom/pom.xml
+++ b/pom/pom.xml
@@ -120,12 +120,14 @@
                   <goal>single</goal>
                 </goals>
                 <configuration>
+                  <!-- we don't want to attach all the assemblies, such as bz2 -->
                   <attach>false</attach>
                 </configuration>
               </execution>
             </executions>
           </plugin>
           <plugin>
+            <!-- only attach the project and bin assemblies, in tar.gz and zip flavors -->
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>build-helper-maven-plugin</artifactId>
             <executions>