Creating views view in your module is really simple.

demo_module.php

<?php 
// 1.
// Create your view the regular way.
 
// 2.
// Define your views api version and path for files that include views hooks.
/**
* Implementation of hook_views_api().
*/
function HOOK_views_api() {
  return array(
    'api' => 3.0,
    'path' => drupal_get_path('module', 'HOOK')
  );
}
 
// 3.
// Views export creates code that you have to paste in this function.
/**
 * Implementation of hook_views_default_views().
 */
function HOOK_views_default_views() {
 
  // Paste code form views export.
 
  $views[$view->name] = $view;
  return $views;
}
 
// 4.
// Delete your view and clear all caches, view from your code should appear. When you change the view don't forget to add the changes to code.