use this code below :
<?xml version="1.0" encoding="ISO-8859-1"?>
<product productid="socialbutton" active="1">
<title>Social Button (FaceBook + Twitter + Google)</title>
<description />
<version>1.0</version>
<url />
<versioncheckurl />
<dependencies>
</dependencies>
<codes>
<code version="*">
<installcode><![CDATA[if ($vbulletin->products['tms'])
{
require_once(DIR . '/includes/adminfunctions_templateedits.php');
install_templateedits($info, $arr, $active);
}]]></installcode>
<uninstallcode><![CDATA[if ($vbulletin->products['tms'])
{
require_once(DIR . '/includes/adminfunctions_templateedits.php');
uninstall_templateedits($vbulletin->GPC['productid']);
}]]></uninstallcode>
</code>
</codes>
<templates>
<template name="social_button" templatetype="template" date="1271089062" username="Manfred Aretz" version="1.0.1"><![CDATA[<div class="right" style="padding:10px;">
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_UK/all.js#xfbml=1";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
<div class="fb-like" data-send="false" data-layout="box_count" data-width="450" data-show-faces="true"></div>
<a href="https://twitter.com/share" class="twitter-share-button" data-lang="en" data-count="vertical">Tweet</a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);j s.id=id;js.src="https://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>
<g:plusone size="tall"></g:plusone>
</div>]]></template>
</templates>
<stylevardfns>
</stylevardfns>
<stylevars>
</stylevars>
<hooks>
<hook>
<hookname>header_before_content</hookname>
<title>Social Button (FaceBook + Twitter + Google)</title>
<active>1</active>
<hookorder>10</hookorder>
<template>social_button</template>
<arguments />
</hook>
</hooks>
<phrases>
</phrases>
<options>
</options>
<helptopics>
</helptopics>
<cronentries>
</cronentries>
<faqentries>
</faqentries>
<widgets>
</widgets>
</product>
the language is on en-UK
if you wont to change to another locale change the following lines depends to your locale :
find :
js.src = "//connect.facebook.net/en_UK/all.js#xfbml=1";
and change the red marked text to yours
find :
<a href="https://twitter.com/share" class="twitter-share-button" data-lang="en" data-count="vertical">Tweet</a>
change the red market text to yours