Changing the icons used

Hi,

I was wondering if it was possible to change the icons that are being used for some of the social networks.

Font-Awesome has square icons that I would prefer to use over the square versions generated by the plugin.

I have tried to use the code mentioned elsewhere to add a square version.

function my_slideshare_icon($wpfai_socialmedia) {

  $wpfai_socialmedia['facebook-square'] = array(
    'name' => 'Facebook-Square',
    'icon' => 'facebook-square',
    'link' => 'http://www.facebook.com/sharer.php?u={url}&t={title}'
  );
  return $wpfai_socialmedia;
}

add_filter('wpfai_array_filter', 'my_slideshare_icon', 99, 1);

https://wordpress.org/plugins/wp-font-awesome-share-icons/