README.md binary URLs lead to undefined artifacts.

### Issue: When you click on the badge in the README for any of the provided binaries, they lead to a [storage.googleapis.com url](https://storage.googleapis.com/shaderc/badges/build_link_linux_clang_release.html) which redirects to a storage key that isn't found.

The README clearly states that the binaries are "just the artifacts of the builders and have not undergone any QA, thus they should be considered unsupported". But it would still be nice to get those binaries.

Would it be possible to get a URL that leads to the right archive?