Update reference to Maven Plug-in project

- Issue #4: Clarify that the project link is private so that people won't suspect a 
  broken link.  Provide directions on how to get access.

Signed-off-by: Jeff Scheel <scheel@us.ibm.com>

README.md

@@ -27,10 +27,13 @@ This can be accomplished with the following steps:
   ```
 
 The online version of the document can be found in the OpenPOWER Foundation
-Document library at [OpenPOWER Foundation Documentation Development Guide](http://openpowerfoundation.org/?resource_lib=openpower-foundation-documentation-development-guide)
+Document library at [OpenPOWER Foundation Documentation Development Guide](http://openpowerfoundation.org/?resource_lib=openpower-foundation-documentation-development-guide).
 
-The project which control the look and feel of the document is the 
-[Docs-Maven-Plugin project](https://github.com/OpenPOWERFoundation/Docs-Maven-Plugin).
+The project which controls the look and feel of the document is the 
+[Docs-Maven-Plugin project](https://github.com/OpenPOWERFoundation/Docs-Maven-Plugin), an 
+OpenPOWER Foundation private project on GitHub.  To obtain access to the Maven Plugin project, 
+contact Jeff Scheel \([scheel@us.ibm.com](mailto://scheel@us.ibm.com)\) or 
+Jeff Brown \([jeffdb@us.ibm.com](mailto://jeffdb@us.ibm.com)\).
 
 ## License
 This project is licensed under the Apache V2 license.  More information