Update README.md

Author: ota-meshi

README.md

@@ -7,7 +7,7 @@
 [![npm](https://img.shields.io/npm/dt/cheetah-grid.svg)](https://www.npmjs.com/package/cheetah-grid)  
 [![NPM](https://nodei.co/npm/cheetah-grid.png?downloads=true&stars=true)](https://www.npmjs.com/package/cheetah-grid)
 
-<img src="https://future-architect.github.io/cheetah-grid/logo.png" style="max-width: 600px;" alt="Cheetah Grid" />
+[![Cheetah Grid](https://future-architect.github.io/cheetah-grid/logo.png)](https://future-architect.github.io/cheetah-grid/)  
 
 The fastest open-source web component of data table.