How about an option for no image at all?

This is a great, simple plugin, but I have one suggestion for an improvement: how about an option not to have any image at all? For my purposes, it would be better to just remove the image altogether, rather than display a fallback image. I tried using a 1-pixel transparent PNG, but the HTML still makes space for the image, so there’s a big blank area where the image would be.

It should be a simple matter of a checkbox option on the admin screen, and then if it’s checked, have the inserted code be this, instead of using the fallback image:

onerror="jQuery(this).remove();"