Update readme

.github/workflows/pr-builder.yml

@@ -19,11 +19,11 @@ jobs:
 
     strategy:
       matrix:
-        java-version: [ 11, 17 ]
+        java-version: [ 8, 11, 17 ]
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Adopt JDK 11 and Adopt JDK 17
+      - name: Set up Adopt JDK
         uses: actions/setup-java@v2
         with:
           java-version: ${{ matrix.java-version }}

README.md

@@ -4,7 +4,7 @@
 | :------------ |:------------- |:-------------
 | master      | [![Build Status](https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fwso2.org%2Fjenkins%2Fjob%2Fplatform-builds%2Fjob%2Fidentity-api-server%2F)](https://wso2.org/jenkins/job/platform-builds/job/identity-api-server/) | [![Travis CI Status](https://travis-ci.org/wso2/identity-api-server.svg?branch=master)](https://travis-ci.org/wso2/identity-api-server?branch=master)|
 
-This repository contains modules related to the server related REST apis 
+This repository contains modules related to the server related REST apis. It can be compiled using JDK 8, JDK 11 or JDK 17.
 
 ### Plugin to Generate the API Stubs