Fix to get country name

Hi all.

On wp 4.6+ wp_remote_get() seem not get a valid data response to check the country.

Looking for, I maked this fix and made it work again for me.

I hope it helps someone.

$referer = site_url();

$args = array(
    'headers' => array('referer' => $referer )
);

$userTmp = wp_remote_get( 'https://www.geoplugin.net/json.gp?ip=' . $user_ip, $args );

//$userTmp = wp_remote_get( 'https://www.geoplugin.net/json.gp?ip=' . $user_ip );