how to integrate libraries to load third party files in themes drupal?
To use a CSS/JS library with the Libraries module in Drupal, there are a number of steps:


copy the library to sites/all/libraries/my-library;
Write a small custom module, which informs Drupal that the library is available;
Add the library where's its needed, e.g. with a MYTHEME_preprocess_html hook.


I found a very nice recent tutorial with code samples here.