gistfile1.php

add_filter( 'tribe-events-bar-views',  'setup_listview_in_bar', 1, 1 );
add_filter( 'tribe-events-bar-views',  'setup_gridview_in_bar', 5, 1 );

function setup_listview_in_bar( $views ) {
	$views[] = array( 'displaying' => 'upcoming', 'anchor' => 'List View', 'url' => tribe_get_listview_link() );
	return $views;
}
 
function setup_gridview_in_bar( $views ) {
	$views[] = array( 'displaying' => 'month', 'anchor' => 'Calendar', 'url' => tribe_get_gridview_link() );
	return $views;
}