Update README and config.mk for conditional target logic

Change-Id: I490cdcc11966a7e944ce6d4c7dced327fe7fa7c7
diff --git a/config.mk b/config.mk
index 34d31d5..43c3ac1 100644
--- a/config.mk
+++ b/config.mk
@@ -22,9 +22,6 @@
 # --repo-name-- :=
 --repo-name-- ?= $(error --repo-name--= is required)
 
-# --repo-name-- :=
---repo-name-- ?= $(error --repo-name--= is required)
-
 ##--------------------------------##
 ##---]  Disable lint targets  [---##
 ##--------------------------------##
@@ -115,4 +112,12 @@
 
 onf-excl-dirs := $(sort $(strip $(onf-excl-dirs)))
 
+##----------------------##
+##---]  Debug Mode  [---##
+##----------------------##
+# export DEBUG           := 1      # makefile debug
+# export DISTUTILS_DEBUG := 1      # verbose: pip
+# export DOCKER_DEBUG    := 1      # verbose: docker
+# export VERBOSE         := 1      # makefile debug
+
 # [EOF]