Update README.md documentation

Added:
    - Added new key features supported.
    - New test directory section entry for RAS.

Change-Id: I15c68507493be63ef88a986b9adff3bcd857b20b
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/README.md b/README.md
index 5c4b662..3bf8133 100755
--- a/README.md
+++ b/README.md
@@ -14,6 +14,9 @@
 * HTX bootme
 * XCAT execution
 * Network
+* IPMI support
+* Factory reset
+* RAS (Reliability, availability and serviceability)
 
 **Debugging Supported List**
 * SOL collection
@@ -72,13 +75,15 @@
           verification.
 
 `extended/`: Contains test cases for boot testing, network testing,
-             code update, RAS (Reliability, availability and serviceability)
-             testing, etc.
+             code update testing etc.
 
 `systest/`: Contains test cases for HTX bootme.
 
 `xcat/`: Contains test cases for XCAT automation.
 
+`ras/`: Contains test cases for RAS (Reliability, availability and
+        serviceability).
+
 `tools/`: Contains various tools.
 
 `templates/`: Contains sample code examples and setup testing.