Provide some documentation - what should I be seeing after installing, and where?

Hi,

I'm trying to test out this module. From the project page it seems that I should be seeing some information about the indexes on Views previews. But I haven't noticed any in any of my Views which I've previewed after enabling the module.

Maybe a quick README would be helpful, with information about: any installation necessary? What information exactly will the module provide? Where does this info get printed? Does it always get printed, or only if no indexes found/some other problem is encountered?

Thanks!