chore: update readme

Author: SSebo

README.md

@@ -14,17 +14,20 @@ Reading the short [Basic Terms](https://github.com/FeatureProbe/FeatureProbe/blo
 
 ## Try Out Demo Code
 
-We provide a runnable demo code for you to understand how FeatureProbe SDK is used.
+We provide a runnable [demo](https://github.com/FeatureProbe/client-sdk-js/tree/main/example) for you to understand how FeatureProbe SDK is used.
+
+1. Use featureprobe.io online service. [Go to](https://featureprobe.io/login)
+   
+   Or setup FeatureProbe service with docker composer. [How to](https://github.com/FeatureProbe/FeatureProbe#1-starting-featureprobe-service-with-docker-compose)
 
-1. Start FeatureProbe Service with docker composer. [How to](https://github.com/FeatureProbe/FeatureProbe#1-starting-featureprobe-service-with-docker-compose)
 2. Download this repo and run the demo program:
 ```bash
 git clone https://github.com/FeatureProbe/client-sdk-js.git
 cd client-sdk-js
 // open example/index.html in browser
 ```
 
-3. Find the Demo code in [example](https://github.com/FeatureProbe/client-sdk-js/tree/main/example), 
+3. Find the Demo code [here](https://github.com/FeatureProbe/client-sdk-js/tree/main/example), 
 do some change and run the program again.
 ```
 // open example/index.html in browser