First of all, I have to admit: your plugin is awesome, simple and efficient. Gratz! But the major problem I found is the fact that there aren't an option to add the "Pin it" button at mages with class "A" or "B" or something like that. I have a lightbox plugin in my blog, and the button isn't showing in the lightbox images. I know the class of those images, but how can I put the button there? I tried to change the .js file from the plugin folder adding the correspondent class, but without success.
I noticed that I'm not the only one with this doubt, so this will be helpfull for a lot of bloggers that use your plugin. Thank's in advance!
PS: Sou brasileiro também!