Update README.md

Author: AaronHolbrook

README.md

@@ -1,8 +1,24 @@
 # Icons
 > Simple, easy to use icons.
 
-Simply find the icon you want to use from here: https://feathericons.com/ and use it by calling:
+Simply find the icon you want to use from either of these icon sets:
 
+* [Feather Icons](https://feathericons.com/)
+* [Box Icons](https://boxicons.com)
+
+## Usage
+
+The icon pack will default to the Feather Icon pack.
+
+
+Feather 'Archive' Icon:
+```php
+\Zeek\Icons\get_svg_path( 'archive' ); 
+```
+> ![Archive SVG Icon](./assets/img/svg/feather/archive.svg)
+
+Box Icons 'Archive' Icon:
 ```php
-\Zeek\Icons\get_svg_path( 'icon' ); 
-```
+\Zeek\Icons\get_svg_path( 'bx-archive', 'boxicons' );
+```
+> ![Archive SVG Icon](./assets/img/svg/boxicons/bx-archive.svg)