Merge branch 'feature/readme' into 'master'

Feature/readme

See merge request !22

README.md

@@ -82,3 +82,27 @@ wpdesk_permanent_dismissible_wp_notice( 'Notice text goes here', 'notice-name' )
 // Is equivalent to
 $notice = new \WPDesk\Notice\PermanentDismissibleNotice( 'Notice text goes here', 'notice-name' );
 ```
+
+## Project documentation
+
+### AJAX handler
+
+To use permanent dismissible notices AJAX handler must be created and hooks initialized:
+
+```php
+wpdesk_init_wp_notice_ajax_handler();
+
+// Is equivalent to:
+( new \WPDesk\Notice\AjaxHandler() )->hooks();
+```
+
+### Displaying 
+
+To display permanent dismissible notice:
+
+```php
+wpdesk_permanent_dismissible_wp_notice( 'Notice text goes here', 'notice-name' );
+
+// Is equivalent to
+$notice = new \WPDesk\Notice\PermanentDismissibleNotice( 'Notice text goes here', 'notice-name' );
+```

tests/integration/TestAjaxHandler.php

@@ -44,6 +44,9 @@ class TestAjaxHandler extends WP_UnitTestCase
     {
         $ajaxHandler = new AjaxHandler(self::ASSETS_URL);
         $ajaxHandler->hooks();
+        global $current_screen;
+        $current_screen = new stdClass();
+        $current_screen->id = 'test';
         do_action('admin_enqueue_scripts');
         $registeredScripts = wp_scripts()->registered;