Update README documentation

Changes:
    - Add link to Web UI Installation setup guide

Tested:
   - NA

Change-Id: Iea78c735811ed8a65ee70dcd72a577a47822b17d
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/README.md b/README.md
index 0ada22d..0a3152d 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,9 @@
 
 you'll find this file once your clone openbmc-test-automation repository.
 
+For Web UI ( GUI ) Testing setup instructions see
+[OpenBMC GUI Test Setup Guide](https://github.com/openbmc/openbmc-test-automation/blob/master/docs/gui_setup_reference.md)
+
 Installing tox:
 
 ```