Update README.md

README.md

@@ -1,5 +1,6 @@
 ## Slambook2
 ![titlepage](./figures/title.png)
+
 Welcome to Slambook 2nd Edition! This is the codebase of our book. Here are some relavant links if you need them: 
 - [Our book at jd.com](https://item.jd.com/12666058.html)
 - [Our book at douban.com](https://book.douban.com/subject/27028215/) (I'll be happy to get a score at douban)
@@ -24,4 +25,4 @@ Hope you like this book.
 
 勘误表会更新到代码库中。
 
-希望您喜欢本书。
+希望您喜欢本书。