Voce SEO

Adds filterable SEO and Social fields to all publicly queryable post types and applies them to the header of the site to improve discoverability.

As standard plugin:

See Installing Plugins.

As theme or plugin dependency:

After dropping the plugin into the containing theme or plugin, add the following:
php
if( ! class_exists( 'VSEO' ) ) {
require_once( $path_to_voce_seo . '/voce-seo.php' );
}