Odoo 9 : Replace 'Powered by Odoo' Footer string

1) Create a new xml file as 'webclient_templates.xml' and add below code.

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
       
        <!-- Purpose : Replace Odoo string and link as per your company's link and name - Added by Nivas M -->
        <template id="inherited_web_menu_secondary" inherit_id="web.menu_secondary">
        <xpath expr="//div[@class='oe_footer']" position="replace">
           <div class="oe_footer">
              Powered by <a href="http://yourcompany.com/" target="_blank"><span>Your Company</span></a>
           </div>
            </xpath>
        </template>

</data>
</openerp>