Added missing description to incubator category
diff --git a/releng/org.eclipse.rap.incubator.releng/incubator-repository/category.xml b/releng/org.eclipse.rap.incubator.releng/incubator-repository/category.xml
index 242e0a4..774b6d1 100644
--- a/releng/org.eclipse.rap.incubator.releng/incubator-repository/category.xml
+++ b/releng/org.eclipse.rap.incubator.releng/incubator-repository/category.xml
@@ -9,5 +9,9 @@
    <feature url="features/org.eclipse.rap.incubator.visualization.feature_1.5.0.qualifier.jar" id="org.eclipse.rap.incubator.visualization.feature" version="1.5.0.qualifier">
       <category name="org.eclipse.rap.incubator.feature.category"/>
    </feature>
-   <category-def name="org.eclipse.rap.incubator.feature.category" label="Rich Ajax Platform (RAP) Incubator"/>
+   <category-def name="org.eclipse.rap.incubator.feature.category" label="Rich Ajax Platform (RAP) Incubator">
+      <description>
+         Ports and additions to RAP, provided by the RAP Incubator project
+      </description>
+   </category-def>
 </site>