docs(README.md): Add validate eslint doc section

Author: thamudi

README.md

@@ -5,6 +5,7 @@ This repository contains JOSA's custom pre-commit hooks.
 ## Available Hooks
 
 - [Validate Flux](#validate-flux) - A script to validate Flux custom resources and Kustomize overlays.
+- [Validate Eslint](#validate-eslint) - A script to validate eslint rules on Javascript and Typescript files.
 
 ___
 
@@ -41,3 +42,39 @@ pre-commit install -t pre-push
 ```
 
 ___
+
+## validate-eslint
+
+This script runs eslint rule checks on staged files that have the following extensions:
+
+- ts
+- tsx
+- vue
+- js
+- jsx
+
+### Prerequisites
+
+You need the following to be installed on your machine before running this pre-commit script.
+
+- [ESLINT v8.11](https://www.npmjs.com/package/eslint)
+
+### Usage
+
+Add this to your .pre-commit-config.yaml:
+
+```yaml
+-   repo: https://github.com/jordanopensource/pre-commit-hooks
+    rev: v0.1.0  # Use the ref you want to point at
+    hooks:
+    -   id: validate-eslint
+    # -   id: ...
+```
+
+After the configuration is added, you'll need to run
+
+```bash
+pre-commit install -t pre-commit
+```
+
+___