Update README.md

Author: MatrixAge

README.md

@@ -1,5 +1,36 @@
-# Testool
 
-A artifact for the test/interview/exam.
+<p align="center"><a href="#" target="_blank" rel="noopener noreferrer"><img width="200" src="https://s1.ax1x.com/2020/04/03/GNz8l6.png" alt="logo"></a></p>
+
+# <p align="center"> testool </p>
+
+_<p align="center">A awesome tool for interview & test & exam!</p>_
+
+<p align="center">
+  <a href="#"><img src="https://img.shields.io/badge/join-welcome-brightgreen.svg" alt="attitude_img"></a>
+  <a href="#"><img src="https://img.shields.io/badge/style-fic%20design-yellow.svg" alt="style_img"></a>
+  <a href="#"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License"></a>
+</p>
+
+## Usage
+
+https://matrixage.github.io/testool/
+
+## Preview
+
+![preview_img](https://s1.ax1x.com/2020/04/03/GUSTPA.png)
+![preview_img](https://s1.ax1x.com/2020/04/03/GUSxaQ.png)
+
+## Accessibility
+
+Testool supports the modern browers which support indexeddb and pwa.
+
+## License
+
+Testool is licensed under the MIT license. (http://opensource.org/licenses/MIT)
+
+## Contributing
+
+Welcome advices and pr!
+
+
 
-## preview