docs: add emojis

Author: kenjis

docs/index.md

@@ -1,20 +1,20 @@
 # Shield Documentation
 
-## What is Shield?
+## What is Shield? 🤔
 
 Shield is the official authentication and authorization framework for CodeIgniter 4. While
 it does provide a base set of tools that are commonly used in websites, it is
 designed to be flexible and easily customizable.
 
-### Primary Goals
+### Primary Goals 🥅
 
 The primary goals for Shield are:
 
 1. It must be very flexible and allow developers to extend/override almost any part of it.
 2. It must have security at its core. It is an auth lib after all.
 3. To cover many auth needs right out of the box, but be simple to add additional functionality to.
 
-### Important Features
+### Important Features 🌠
 
 * Session-based authentication (traditional ID/Password with Remember-me)
 * Stateless authentication using Personal Access Tokens
@@ -24,11 +24,11 @@ The primary goals for Shield are:
 * Flexible Groups-based access control (think Roles, but more flexible)
 * Users can be granted additional Permissions
 
-### License
+### License 📑
 
 Shield is licensed under the MIT License - see the [LICENSE](https://github.com/codeigniter4/shield/blob/develop/LICENSE) file for details.
 
-### Acknowledgements
+### Acknowledgements 🙌🏼
 
 Every open-source project depends on it's contributors to be a success. The following users have
 contributed in one manner or another in making Shield: