Modify the readme .

Author: cdoco

README.md

@@ -1,7 +1,6 @@
-<div align=center>
-    <p><img src="https://camo.githubusercontent.com/d9ac39c754c40fae6d66696037c3a33540c2bd09/687474703a2f2f686173686964732e6f72672f7075626c69632f696d672f686173686964732e676966" alt="Hashids"/></p>
-    <a target="_blank" href="https://opensource.org/licenses/MIT" title="License: MIT"><img src="https://img.shields.io/badge/License-MIT-blue.svg"></a>
-</div>
+[![hashids](http://hashids.org/public/img/hashids.gif "Hashids")](http://hashids.org/)
+
+[![License][license-image]][license-url]
 
 > A php extension for Hashids
 
@@ -49,7 +48,7 @@ $numbers = $hashids->decode($hash); // [1, 2, 3, 4, 5]
 
 php extension and native php performance contrast.
 
-![performance comparison](https://cdoco.com/images/performance.png)
+![performance comparison](https://cdoco.com/images/performance.png "performance comparison")
 
 ## Other