It’s super-simple to share a single photo from an iPhone, iPod touch, or iPad, but what about those times when you want to share a batch of photos all at once? In the Photos app’s Camera Roll or album view, simply tap the box with the arrow coming out of it—also known as the action button, or the “do something with this” box. Once it’s been tapped, you can select up to five photos to share via email or MMS (on the…