Please add other collaborators so they can approve pull requests.

[MattyStacks]

I really love this project, but it doesn't seem to be up updated all the time. @andrewning if you could possibly give a few other people collaborator access to approve pull requests that would be awesome. I would be willing to be one of those people. I think there are few others as well.

I'm not an advanced python user. However, I can look through things like the exif updates, and documentation fixes.