Adding Css,Javascrpt To XML File:

<?xml version="1.0"?>
<layout>
<default>
<reference name="head">
<action method="addItem"> 
<type>skin_js</type> 
<name>js/jquery-1.11.3.min.js</name> 
</action> 
<action method="addCss"> 
<stylesheet>css/flexslider.css</stylesheet> 
</action> 
</reference>
</default>
</layout>