Added new filter 'fly_dir_path'

The location of the fly images folder can now be changed using a new filter: 'fly_dir_path'. The following code can be pasted into the functions.php file:

function change_fly_path( $path ) {
    return '/var/www/html/wp-content/uploads/new-path/';
}
add_filter( 'fly_dir_path', 'change_fly_path' );