README: no need to name contributions
README: no need to name contributions

Contributions are visibil at https: //github.com/andreknieriem/photobooth/graphs/contributors
Change-Id: I5ebc6bb8aaa348c145a4f8dde7be685d0ef50ac3

andreknieriem/photobooth,andreknieriem/photobooth,andreknieriem/photobooth,andreknieriem/photobooth