message: Update main readme.
diff: Minigo: A minimalist Go engine modeled after AlphaGo Zero, built on MuGo
  ==================================================
  +[Test Dashboard](https://k8s-testgrid.appspot.com/sig-big-data#tf-minigo-presubmit)
  +
  This is a pure Python implementation of a neural-network based Go AI, using
  TensorFlow. While inspired by DeepMind's AlphaGo algorithm, this project is not
  a DeepMind project nor is it affiliated with the official AlphaGo project.
  @@ -114,6 +116,16 @@ Running unit tests
  BOARD_SIZE=9 python3 -m unittest discover tests
  ```
  +Automated Tests
  +----------------
  +
  +Minigo uses the Kubernetes
  +[Prow](https://github.com/kubernetes/test-infra/tree/master/prow) to
  +automatically test PRs. You can see the status of our automated tests by
  +looking at the Prow and Testgrid UIs:
  +
  +Testgrid (Test Results Dashboard): https://k8s-testgrid.appspot.com/sig-big-data
  +Prow (Test-runner dashboard): https://prow.k8s.io/?repo=tensorflow%2Fminigo
  Basics
  ======
  