Added documentation for paginate's second optional argument.

Signed-off-by: Jakobud <jake.e.wilson@gmail.com>

laravel/documentation/views/pagination.md

@@ -22,6 +22,10 @@ Let's walk through a complete example of paginating using the [Fluent Query Buil
 
 	$orders = DB::table('orders')->paginate($per_page);
 
+You can also pass an optional array of table columns to select in the query:
+
+	$orders = DB::table('orders')->paginate($per_page, array('id', 'name', 'created_at'));
+
 #### Display the results in a view:
 
 	<?php foreach ($orders->results as $order): ?>