From 17f788b73fc500d8fb7fcb0ab204cae92b4b9382 Mon Sep 17 00:00:00 2001
From: Dmitry Shirokov <deadrunk@gmail.com>
Date: Mon, 16 Oct 2017 11:46:01 +1100
Subject: [PATCH] Update readme

---
 README.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/README.md b/README.md
index 496f518..7ca84e3 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,15 @@ chardet.detectFile('/path/to/file', function(err, encoding) {});
 chardet.detectFileSync('/path/to/file');
 ```
 
+## Working with large data sets
+
+Sometimes, when data set is huge and you want to optimize performace (in tradeoff of less accuracy), 
+you can sample only first N bytes of the buffer:
+
+```javascript
+chardet.detectFile('/path/to/file', { sampleSize: 32 }, function(err, encoding) {});
+```
+
 ## Supported Encodings:
 
 * UTF-8