[TASK] (util): add comments to README

util/README

@@ -21,12 +21,17 @@ csbulistcsfiles.sh
 csbucheckcsfiles.sh 
   Check completeness of checksum files in the sense that the checksum file
   must contain one entry per data file.
+  --- not yet implemented ---
 
 csbucomparecsfiles.sh
   Check downstream data archives for checksum files. Report missing checksum
   files and checksum files differing from the upstream file.
+  --- not yet implemented ---
 
 csbucscheck.sh
   Recurse into a read-only subdirectory tree and verify checksums.
 
+csbusortdirlist.py
+  Collect all directories being checksum-supervised in wiki formatted tables.
+
 ----- END OF util/README -----