README.md update documentation for DMTF Redfish

Changes:
    - The future Redfish tests are going to be different from existing
      traditional REST structure and infrastructure supported in test
      and library. Starting a different heading and parallel code
      support structure for future migration.

Resolves  openbmc/openbmc-test-automation#1430

Change-Id: I7c63f193532b5535e195e72d69a504bd814e8f2c
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/README.md b/README.md
index 094e757..fa28ad6 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 **Interface Feature List**
 * REST
+* DMTF Redfish
 * Out-of-band IPMI
 * SSH to BMC and Host OS
 
@@ -108,7 +109,17 @@
 `tools/`: Contains various tools.
 
 `templates/`: Contains sample code examples and setup testing.
-`
+
+
+## Redfish Test Layout ##
+
+OpenBMC is moving steadily towards DTMF Redfish, which is an open industry standard
+specification and schema that meets the expectations of end users for simple,
+modern and secure management of scalable platform hardware.
+
+`redfish_test`: Contains test cases for DMTF Redfish-related feature supported
+                on OpenBMC.
+
 
 ## Quickstart ##
 To run openbmc-automation first you need to install the prerequisite Python