From 8d146accf3f48538a52388a93c758244c004d224 Mon Sep 17 00:00:00 2001
From: Lovell Fuller <github@lovell.info>
Date: Thu, 5 Jun 2014 22:00:39 +0100
Subject: [PATCH] Correct docs - callback is optional for png

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 6ab97948..5e757883 100755
--- a/README.md
+++ b/README.md
@@ -220,7 +220,7 @@ Write JPEG image data to a Buffer.
 
 A Promises/A+ promise is returned when `callback` is not provided.
 
-### png(callback)
+### png([callback])
 
 Write PNG image data to a Buffer.