Add release icon in readme.md (#1237)

* Add release icon in readme.md

* update version

* update

* delete version message in href

README.md

@@ -17,9 +17,9 @@
 NNI (Neural Network Intelligence) is a toolkit to help users run automated machine learning (AutoML) experiments.
 The tool dispatches and runs trial jobs generated by tuning algorithms to search the best neural architecture and/or hyper-parameters in different environments like local machine, remote servers and cloud.
 
-### **NNI [v0.9](https://github.com/Microsoft/nni/releases) has been released!**
+### **NNI [v0.9](https://github.com/Microsoft/nni/releases) has been released! &nbsp;<a href="#nni-released-reminder"><img width="48" src="docs/img/release_icon.png"></a>**
 <p align="center">
-  <a href="#nni-v05-has-been-released"><img src="docs/img/overview.svg" /></a>
+  <a href="#nni-has-been-released"><img src="docs/img/overview.svg" /></a>
 </p>
 <table>
   <tbody>