Issue in README

[chrislovecnm]

Alternatively, you can build a docker load compatible bundle with: bazel build my/image:helloworld.tar. This will produce the file: bazel-genfiles/my/image/helloworld.tar, which you can load into your local Docker client by running: docker load -i bazel-genfiles/my/image/helloworld.tar. Building this target can be expensive for large images.

This does not seem to be correct

tars seem to be landing in bazel-bin