Update README.md

Author: varunsh-coder

README.md

@@ -1,3 +1,20 @@
-# Harden-Runner
+<p align="left">
+  <img src="https://step-security-images.s3.us-west-2.amazonaws.com/Final-Logo-06.png" alt="Step Security Logo" width="340">
+</p>
+
+# Harden GitHub Actions Hosted Runner
+
+This GitHub Action deploys the [Step Security Agent](https://github.com/step-security/agent), which is a purpose-built security agent for hosted runners.
+
+To pilot this GitHub Action, add the following code to your GitHub Actions workflow file as the first step. This is the only step needed.
+
+```
+steps:
+    - uses: step-security/harden-runner@main
+```
+
+In the workflow logs, you should see a link to security insights and recommendations.
+
+It is being piloted on [this](https://github.com/shivammathur/setup-php) repository. Check out the [workflow files](https://github.com/shivammathur/setup-php/blob/2f5c2edb229fb5b3dcaeb535cb83899b41854672/.github/workflows/node-workflow.yml#L30) and [workflow runs](https://github.com/shivammathur/setup-php/runs/4252355681?check_suite_focus=true#step:3:4).
+
 
-Work in progress...