update

AoyuLiu · Nov 13, 2017 · 386016c · 386016c
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diff --git a/README.md b/README.md
@@ -7,7 +7,10 @@
 ## 反馈
 [交流&吐槽](https://github.com/pangudashu/php7-internal/issues/3)  [错误反馈](https://github.com/pangudashu/php7-internal/issues/2)
 
-![](img/my_wx2.png)
+## 纸质版
+<div align="center">
+    <img src="img/book.jpg" height="280" >
+</div>
 
 ## 目录：
 * 第1章 PHP基本架构

diff --git a/img/book.jpg b/img/book.jpg