Update README to template (#5)

* Update README to template

* Don't delete my beautiful banner image. Also you broke the table.

---------

Co-authored-by: Kenny Daniel <[email protected]>

Author: jonasferoz

README.md

@@ -13,26 +13,28 @@
 | License | Apache 2 |
 | Input/Output | Output |
 
-# Description
+## Description
+
+### Intended Use
 
 A CSV validator for [Guardrails AI](https://www.guardrailsai.com/).
 
 This validator checks for various CSV issues such as mismatched column lengths, or mismatched quote delimiters.
 
-## Requirements
+### Requirements
 
 * Dependencies:
 	- guardrails-ai>=0.4.0
 
-# Installation
+## Installation
 
 ```bash
 $ guardrails hub install hub://hyparam/csv_validator
 ```
 
-# Usage Examples
+## Usage Examples
 
-## Validating string output via Python
+### Validating string output via Python
 
 In this example, we apply the validator to a string output generated by an LLM.
 
@@ -50,7 +52,7 @@ guard.validate("name,email\njohn,[email protected]\njane,[email protected]")  # Va
 guard.validate("name,email\njohn\njane,[email protected]")  # Validator fails
 ```
 
-## Validating JSON output via Python
+### Validating JSON output via Python
 
 In this example, we apply the validator to a string field of a JSON output generated by an LLM.