If You Are using cPanal Hosting From GoDaddy Login To cPanal Go To File Manager Then Public Html. Here all wordpress files are located. Open wp-content-> plugins->revslider/includes/framework/base-admin.class.php
You also login to dashboard and hover over plugin and select plugin editor. Then from the right top corner select the rev slider plugin. Now all plugin file you will see as in the image number 3.