Adding images to the repository for panorama stitching

Hi everyone, I was working on the panorama stitching example, and adding images to the repository ( https://github.com/NelleV/scikits.image/commit/50ff69389bc3458eb1cfb263d1473... ). Talking with Gaël about this, I realized it probably wasn't the best idea to clutter the repository with images probably no one else will use. In scikit-learn, data used for examples is downloaded from internet only when used,, and stored in the user home folder. What do you think about implementing this for skimage ? Thanks, N