enable support for cors params

Change-Id: I17beef615a50fdf2c8d8d805b5b6b37a2f6c48dd
diff --git a/README.rst b/README.rst
index da40458..2930b2a 100644
--- a/README.rst
+++ b/README.rst
@@ -67,6 +67,21 @@
           virtual_host: '/openstack'
           ha_queues: True
 
+Enable CORS parameters
+
+.. code-block:: yaml
+
+    heat:
+      server:
+        cors:
+          allowed_origin: https:localhost.local,http:localhost.local
+          expose_headers: X-Auth-Token,X-Openstack-Request-Id,X-Subject-Token
+          allow_methods: GET,PUT,POST,DELETE,PATCH
+          allow_headers: X-Auth-Token,X-Openstack-Request-Id,X-Subject-Token
+          allow_credentials: True
+          max_age: 86400
+
+
 Heat client with specified git templates
 
 .. code-block:: yaml