Added possibility to disable proxy_request_buffering in nginx

Change-Id: I52313b2a59401aebe05c79c0c0cde88dcb1c7a72
Closes-bug: PROD-15961
diff --git a/README.rst b/README.rst
index cde94d3..cbf35a8 100644
--- a/README.rst
+++ b/README.rst
@@ -245,6 +245,7 @@
             enabled: true
             type: nginx_proxy
             proxy:
+              request_buffer: false
               buffer:
                 number: 8
                 size: 16