From 8a103f46962a1be8e5757eab119ac7f79a5aede3 Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Fri, 28 Apr 2017 08:22:33 +0200
Subject: [PATCH] Document the special %generate(secret)% env var value

---
 README.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README.rst b/README.rst
index 60ba0ce6..9c300501 100644
--- a/README.rst
+++ b/README.rst
@@ -201,6 +201,11 @@ The ``###> your-recipe-name-here ###`` section separators are needed by Symfony
 to detect the contents added by this dependency in case you uninstall it later.
 Don't remove or modify these separators.
 
+.. tip::
+
+    Use ``%generate(secret)%`` as the value of any environment variable to
+    replace it with a cryptographically secure random value of 16 bytes.
+
 ``makefile`` Configurator
 ~~~~~~~~~~~~~~~~~~~~~~~~~