Add SugarChimp Activity as a Sugar Subpanel

gistfile1.php

<?php

$layout_defs['Contacts']['subpanel_setup']['sugarchimpactivity'] = array(
    'top_buttons' => array(array('widget_class' => 'SubPanelTopSelectButton', 'popup_module' => 'SugarChimpActivity', 'mode' => 'MultiSelect'),),
    'order' => 900,
    'sort_by' => 'timestamp',
    'sort_order' => 'desc',
    'module' => 'SugarChimpActivity',
    'refresh_page'=>1,
    'subpanel_name' => 'default',
    'get_subpanel_data' => 'sugarchimpactivity',
    'add_subpanel_data' => 'sugarchimpactivity_id',
    'title_key' => 'LBL_SUGARCHIMPACTIVITY_SUBPANEL_TITLE',
);