[316846] Fix problems with about.html and empty doc.
diff --git a/plugins/org.eclipse.emf.ecoretools/build.properties b/plugins/org.eclipse.emf.ecoretools/build.properties
index 8ab4c8a..6f2a02d 100644
--- a/plugins/org.eclipse.emf.ecoretools/build.properties
+++ b/plugins/org.eclipse.emf.ecoretools/build.properties
@@ -1,5 +1,6 @@
 source.. = src/
 output.. = bin/
+src.includes = about.html
 bin.includes = META-INF/,\
                .,\
                icons/,\