Don't state the obvious (non-MKit way)

README.md

     $ make release_z
 
 Note that `release_z`, makes "Bump version" commits mandatory; this is
-to help you keep your release history clean and documented.  Of course
-you can skip both `vbump_z` and `release_z` and do the tags manually.
+to help you keep your release history clean and documented.
 
 
 ### 5. Release it out into the wild ###