setup gh-pages with this

```
usage: asv gh-pages [-h] [--no-push] [--verbose] [--config CONFIG] [--version]

Publish the results to github pages. Updates the 'gh-pages' branch in the
current repository, and pushes it to 'origin'.

optional arguments:
-h, --help show this help message and exit
--no-push Update local gh-pages branch but don't push
--verbose, -v Increase verbosity
--config CONFIG Benchmark configuration file
--version Print program version
```

Start with the `asv gh-pages` command described in the issue and inspect how this repository currently produces benchmark results. The issue provides no file or test entry point; completion would need to establish a gh-pages publishing setup that updates the branch and, unless `--no-push` is used, pushes it to `origin`.

Written by the indexing model from the issue text.