Auto Bundle removes the need to manually add each bundle to the application/bundles.php file. Just drop a new bundle in to the bundles directory and it will be registered and started.
If your bundle contains a routes.php file it will register a handler for you of your bundles name. If you want your bundle to use an alternate handle (ex: your bundle is named "pizza" but you want it to respond to "admin") then you should still manually add your bundle to application/bundles.php.
Bundles registered with application/bundles.php will not be auto loaded.
Install it just like any Laravel bundle. Drop it in your bundles folder in bundles/userscape/autobundle
After that add this line in the array of application/bundles.php
return array(
'autobundle' => array('location'=>'userscape/autobundle', 'auto' => true),
);