message: Add a better comment
diff: #!/bin/bash
  #
  -# This script is used to bootstrap our prow jobs.
  -# The point of this script is to check out the tensorflow/minigo repo
  -# at the commit corresponding to the Prow job. We can then
  -# invoke the launcher script at that commit to submit and
  -# monitor an Argo workflow
  +# This script is used to bootstrap the prow jobs. In other words, this pulls
  +# the Minigo repo at some point (i.e., at the a pull request or commit sha) and
  +# then runs the Minigo tests.
  set -e
  mkdir -p /src
  