It's just a drupal 7 module created for fun to integrate Infinite Ajax Scroll plugin. Lately I came across with this jquery plugin which is very simple to use on existing pages with normal pager. For views listing with pager you don't have to enable Ajax to use this.
How to integrate this without the module? Well you need to include the plugin file the drupal way using drupal_add_js() at theme level or in .info file or any other right way you can think of suiting your requirements....