Overview
Slate’s default sidebar template in html-templates/includes/site.sidebar.tpl
contains a Twitter widget that
can be activated by creating a widget on Twitter and inputting its settings into Slate.
Creating the widget
Open https://twitter.com/settings/widgets/new, configure your widget, and click Create widget
Configuring Slate
After creating the widget, you can find the long numerical ID Twitter assigns the widget either in the URL for the edit widget page you’ll find yourself on after creating it, or in the embed code Twitter provides you to copy.
Append the following block to your php-config/Slate.config.php
file, replacing the number with your widget’s ID
and MY_HANDLE with your Twitter handle (excluding the @ symbol).
Slate::$siteWidgets['twitter'] = array(
'widgetId' => 1234567890987654321
,'href' => 'https://twitter.com/SlateFoundation'
,'handle' => 'SlateFoundation'
);