Add GitHub Action to docs/README.md (#102)

* Update docs/README.md for GH action

* Fix header level

* Update README.md

Fix action version.

* Update docs/README.md

Co-authored-by: Gaurav Nelson <gaurav@stackrox.com>

Co-authored-by: Gaurav Nelson <gaurav@stackrox.com>

docs/README.md

@@ -62,6 +62,23 @@ brew install kube-linter
    docker run -v /path/to/files/you/want/to/lint:/dir -v /path/to/config.yaml:/etc/config.yaml stackrox/kube-linter lint /dir --config /etc/config.yaml
    ```
 
+### KubeLinter Github Action
+
+You can also run KubeLinter as a GitHub Action. To use the KubeLinter Github Action, create a `kubelint.yml` file (or choose custom `*.yml` file name) in the `.github/workflows/` directory and use `stackrox/kube-linter-action@v1`.
+```yaml
+- name: Scan yamls
+  id: kube-lint-scan
+  uses: stackrox/kube-linter-action@v1
+  with:
+    directory: yamls
+    config: .kube-linter/config.yaml
+```
+The KubeLinter Github Action accepts the following inputs:
+
+|Parameter|Description|
+|:--|:--|
+|`directory`|(Mandatory) A directory path that contains the Kubernetes YAML files or `Chart.yaml` file.|
+|`config`|(Optional) A path to your custom [KubeLinter configuration file](configuring-kubelinter.md).
 ## Building from source
 
 > [!NOTE] Before you build, make sure that you have [installed Go](https://golang.org/doc/install).