[526568] Adding source includes for docs.
diff --git a/doc/org.eclipse.uml2.doc/build.properties b/doc/org.eclipse.uml2.doc/build.properties
index 29a111a..034fbc8 100644
--- a/doc/org.eclipse.uml2.doc/build.properties
+++ b/doc/org.eclipse.uml2.doc/build.properties
@@ -21,3 +21,4 @@
                plugin.xml,\
                toc.xml,\
                META-INF/
+src.includes = about.html