Update from version 1 to 2

Version 6.x-2.x-dev now features an update function to update Vocabulary Index from version 6.x-1.x to 6.x-2.x. Vocabindex checks for the correct schema version in the database and displays a drupal_set_message() error message if it doesn't find it with instructions to direct the user to update.php. Users won't be able to use any part of the module before updating, even menu items aren't declared. The attached patch updates the current dev version.

Committed to 6.x-2.x-dev.