odoo/addons/project_todo/project_todo_demo.xml

<?xml version="1.0" ?>
<openerp>
    <data>

        <record model="project.gtd.timebox" id="timebox_todo">
            <field name="name">TODO</field>
            <field name="icon">terp-check</field>
        </record>
    </data>
</openerp>