Add disable ordering sample code.

Author: redredimano

order-column.md

@@ -31,4 +31,17 @@ Route::get('user-data', function () {
                      $query->orderBy('status', $order);
                  });
 });
+```
+
+Disable ordering via orderColumn.
+
+```php
+use DataTables;
+
+Route::get('user-data', function () {
+    $model = App\User::query();
+
+    return DataTables::eloquent($model)
+                 ->orderColumn('name', false);
+});
 ```