Bamboo CI status on NuPIC PRs

You will notice that PRs are now getting flagged with Bamboo CI failures. You may ignore those for now, because we are still working on that pipeline. We will let you know when those statuses are valid. Soon, there will only be the Bamboo CI status, and we’ll turn off our Travis-CI and AppVeyor builds.

Again, for now, ignore Bamboo CI PR status failures like this: