Added a few more notes

Change-Id: I59eb1969ae86004fc4826b749cbc9cb4615273d5
diff --git a/README.md b/README.md
index 2cf1a58..48b1916 100644
--- a/README.md
+++ b/README.md
@@ -13,23 +13,24 @@
 - The first is a subdir of makefiles/ named 'onf-make'
     - This directory exists and is maintained as a git-submodule
       of [repo:onf-make](https://github.com/opencord/onf-make).
-    - Makefile directory contains independent logic to install common
+    - Library makefiles contain independent logic to install common
       tools such as (virtualenv), perform linting tasks, define constants
       and perform path/string manipulation, etc.
-- The second makefile directory contains repository specific logic
 
-    - Exists as a repository subdirectory named makefiles/local/.
+- The second makefile directory contains repository/project specific logic:
+
+    - makefiles/local/ exists as a repository subdirectory under SCM.
     - Contains custom targets, variant parameters and custom logic
       specific to the repository it exists within.
 
 - Most makefile logic can be parameterized and implemented to support
   reuse.  Consider adding enhancements or refactoring local/ makefile
   logic into [repo:onf-make](https://github.com/opencord/onf-make) so
-  all makefiles can leverage the logic.
+  all makefiles can leverage it.
 
 Hierarchy
 ---------
-    
+
     % tree --charset=ascii -n
     
     Makefile
@@ -63,6 +64,7 @@
     - Create [config.mk](https://github.com/opencord/onf-make/blob/master/config.mk) to enable targets and features.
 
 - Exercise make lint targets, bulk cleanup is needed across all repositories.
+- Relocate $sandbox/config.mk into makefiles/config.mk
 
 NOTES
 =====