Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wordpress-seo/admin/roles/class-register-roles.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * WPSEO plugin file.
+ *
+ * @package WPSEO\Admin\Roles
+ */
+
+/**
+ * Role registration class.
+ */
+class WPSEO_Register_Roles implements WPSEO_WordPress_Integration {
+
+	/**
+	 * Adds hooks.
+	 *
+	 * @return void
+	 */
+	public function register_hooks() {
+		add_action( 'wpseo_register_roles', [ $this, 'register' ] );
+	}
+
+	/**
+	 * Registers the roles.
+	 *
+	 * @return void
+	 */
+	public function register() {
+		$role_manager = WPSEO_Role_Manager_Factory::get();
+
+		$role_manager->register( 'wpseo_manager', 'SEO Manager', 'editor' );
+		$role_manager->register( 'wpseo_editor', 'SEO Editor', 'editor' );
+	}
+}