make sure wp_read_image_metadata() is defined when running media_hand…

…le_sideload() during wp_cron

For #59

classes/NPRAPIWordpress.php

@@ -334,6 +334,7 @@ function update_posts_from_stories( $publish = TRUE, $qnum = false ) {
                             }
 
                             // do the validation and storage stuff
+                            require_once( ABSPATH . 'wp-admin/includes/media.php'); // needed for media_handle_sideload during cron
                             $id = media_handle_sideload( $file_array, $post_id, $image->title->value );
                             // If error storing permanently, unlink
                             if ( is_wp_error($id) ) {