Update README for 2.0

Author: MGatner

README.md

@@ -7,10 +7,10 @@ Lightweight user alerts for CodeIgniter 4
 ## Quick Start
 
 1. Run: `> composer require tatter/alerts`
-2. Load the helper: `helper("tatter\alerts");`
+2. Load the helper: `helper('alerts');`
 2. Set an alert: `alert('success', "You did it!")`
-3. Add in head tag (optional): `<?= alertsCss(); ?>`
-4. Add after banner/menu: `<?= alerts(); ?>`
+3. Add in head tag (optional): `<?= service('alerts')->css(); ?>`
+4. Add after banner/menu: `<?= service('alerts')->display(); ?>`
 
 ## Features
 
@@ -33,15 +33,15 @@ comments. If no config file is found the library will use its defaults.
 
 ## Usage
 
-If installed correctly CodeIgniter 4 will detect and autoload the library, helper, and
-(optional) config. Initialize the helper before using its functions:
+If installed correctly CodeIgniter 4 will detect and autoload the library, service, helper,
+and config. Initialize the helper if you want the convenience wrapper function:
 `helper("tatter\alerts");`
 
 Then use the helper function `alert($class, $text)` to set an alert for the user's next
-view. Use helper functions `alertCss()` and `alerts()` to retrieve the styling and HTML
-for the alerts.
+view. Use class methods `$alerts->css()` and `$alerts->display()` to retrieve the styling
+and HTML for the alerts.
 
 ## Styles
 
 By default alerts will be displayed with classes for Bootstrap. Styles can be changed
-to other toolkits (or may use your own) by altering the settings in the config file.
+to other toolkits (or you may use your own) by altering the settings in the config file.