Did exactly what I needed and got it working in under 1 minute. Just a few suggestions:
1) Have an admin notice to inform the user he needs to authenticate to instragram so the plugin will actually work. I had no idea I had to enter my credentials until I went to the settings page
2) Have a better way to auth with instagram? Having to enter the username password is a bit insecure and when setting up client sites I dont really want to ask them for their password. Is there no oauth alternative?