Can't add GSI to existing table?

[hackborn]

I want to update a table to add a new global secondary index. Code that works against AWS does nothing against dynalite -- it returns no error, but there's no change in the table.

I took a look at what I assume is the update table code (https://github.com/mhart/dynalite/blob/master/actions/updateTable.js) and looks to me like this just isn't implemented, and I'm wondering if there's just some other way to add the index without deleting and recreating the table?