From eb98120866f6ea7a2e39745715cd9ff7b3fd4f6d Mon Sep 17 00:00:00 2001
From: zlh <625335512@qq.com>
Date: Sat, 23 Sep 2017 15:31:37 +0800
Subject: [PATCH] add readme

---
 readme.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/readme.md b/readme.md
index 25f7ef7..bbd1a78 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,22 @@
+#   fast-deep-copy 
+    Only 20 lines code! no deps!
+
+useage:
+```
+    npm install -S fast-deep-copy
+```
+
 ```js
+
     import { deepCopy } from 'fast-deep-copy'
+
+    let a = { dataA: 10, b: null };
+    let b = { dataB: 20, a: null };
+    a.b = b;
+    b.a = a;
+
+    let newA = deepCopy(a);
+    console.log(newA.dataA === 10);     //true
+    console.log(newA.b.dataB === 20);   //true
+    console.log(newA.b.a === newA);     //true
 ```
\ No newline at end of file