Add / remove role capabilities in WP

WP rolescaps

// ADD CAPABILITIES FOR EDITOR ROLE
function update_capabilities() {
    $role = get_role( 'editor' );
    $caps_to_add =  array(
        'manage_options'
    );
    foreach( $caps_to_add as $cap )
        $role->add_cap( $cap );
}
function remove_menu_pages() {
	remove_menu_page('link-manager.php');
	remove_menu_page('edit-comments.php'); // comments
	remove_menu_page('users.php');
	remove_menu_page('plugins.php');
	remove_menu_page('themes.php'); // appearance
	remove_menu_page('tools.php');
	//remove_menu_page('options-general.php'); // ALL settings
}
// ADD / REMOVE CAPABILITIES FOR EDITOR ROLE
if (current_user_can('administrator') != 1) { // not admin, probably an editor
	add_action( 'admin_init', 'update_capabilities' );
	add_action( 'admin_init', 'remove_menu_pages' );
}