Add Categories and Tags To Wordpress Attachments

wp-attatchment-taxonomy.php

// Add Categories To WordPress Attachments
add_action( 'init' , 'add_categories_for_attachments' );
function add_categories_for_attachments(){
	register_taxonomy_for_object_type( 'category', 'attachment' );
}

// Add Tags To WordPress Attachments
add_action( 'init' , 'add_tags_for_attachments' );
function add_tags_for_attachments() {
 	register_taxonomy_for_object_type( 'post_tag', 'attachment' );
}