Completed the overview doc

Author: fulopattila122

docs/overview.md

@@ -3,4 +3,45 @@
 Navigation menus are essential parts of applications. This library offers PHP developers tools to create, organize,
 and manage menus using PHP classes.
 
-!> Work In progress
+```php
+use Konekt\Menu\Facades\Menus
+
+$sidebar = Menus::create('sidebar');
+$sidebar->addItem('home', 'Home',  '/');
+$sidebar->addItem('about', 'About', '/about');
+```
+
+This library focuses on the backend, PHP part of menu building, including the HTML generation.
+The frontend framework, and the menu styling is up to the application, however there are several out-of-the box
+renderers that can be used as a base:
+
+- `ul` + `li` renderer,
+- `ol` + `li` renderer, and
+- `div`-based renderer.
+
+```php
+Menu::get('sidebar')->render('ul');
+//= """
+//  <ul>\n
+//  \t<li class="active"><a href="http://localhost:8080">Home</a></li>\n
+//  \t<li><a href="http://localhost:8080/about">About</a></li>\n
+//  </ul>\n
+```
+
+Besides these, you can also simply use the menus in Blade templates and render them using foreach loops:
+
+```blade
+<div class="menu">
+@foreach($menu->items as $item)
+    @if($item->isAllowed())
+        <div class="menu-item">
+            @if($item->hasLink)
+              <a href="{!! $item->url() !!}">{{ $item->title }}</a>
+            @else
+              {{ $item->title }}
+            @endif
+        </div>
+    @endif
+@endforeach
+</div>
+```