first import

sites/all/modules/node_clone/views/clone.views.inc

@@ -0,0 +1,14 @@
+<?php
+
+/**
+* Implements hook_views_data_alter()
+*/
+function clone_views_data_alter(&$views_data) {
+  $views_data['node']['clone_node'] = array(
+    'field' => array(
+      'title' => t('Clone link'),
+      'help' => t('Provide a simple link to clone the node.'),
+      'handler' => 'views_handler_field_node_link_clone',
+    ),
+  );
+}