update README file

Author: sushobhit-lt

README.md

@@ -1,7 +1,61 @@
 # smartui-github-testing
 
-
 For Testing Github App Integration with SmartUI
 
-- Just do a commit
 
+
+### Getting Started Github App Integration with SmartUI Product - Selenium Automation
+
+Steps 1: Setup Github App with lambdatest from link github setup
+
+- Using OAuth
+
+- Cloud, or
+
+- Self Hosted
+
+
+Step 2: Once setup is done, you will see like 
+
+
+Step 3: Now you need to setup a sample repository where your test case are mentioned, [smartui-github-testing](https://github.com/LambdaTest/smartui-github-testing)
+
+Step 4: For Github Status updates on PR/ commit need to add capabilities in test suite, code snippet
+
+```
+    github: {
+      "url": "https://api.github.com/repos/OWNER/REPO/statuses/commitId",
+      "owner": "{OWNER}",  //Optional
+      "repo": "{REPO}",  //Optional
+      "commit": "{commitId}" //Optional
+    },
+```
+
+Step5: How to get the github.url  value in test suite
+
+Here we have taken an example of github action to get the github.url
+
+Add below steps in your github action file .github/workflows/ci.yml
+```
+    name: Execute SmartUI Test with Github App Integration
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Create commit status
+      run: |
+        API_HOST=https://api.github.com
+        # Check out the PR branch
+        git checkout $GITHUB_HEAD_REF
+        # Get the commit ID of the last commit
+        COMMIT_ID=$(git rev-parse HEAD)
+        echo "Last commit ID of PR: $COMMIT_ID"
+        GITHUB_URL=$API_HOST/repos/$GITHUB_REPOSITORY/statuses/$COMMIT_ID
+        echo "GITHUB_URL: $GITHUB_URL"
+        echo "GITHUB_URL=$GITHUB_URL" >> $GITHUB_ENV
+```
+
+
+Step 6: Commit you changes over git on a branch and raise the PR to main branch
+
+Step 7: Now you will see the `lambdatest-smartui-app` check in the PR