Missing webhookStorePath.

Misisng webhookStorePath

Might want to mention this is also included as /contrib/rb-gateway.service

It also will need write access to the token store path and the webhook store path

Can you add an anchor to this? Maybe rbgateway-index? That'll help with linking from the Review Board manual.

The "... which can require additional APIs" feels a little redundant. Maybe just get rid of that bit.

Can you add a rbgateway-configuration anchor?

Rather than ::, this would be better with:
.. code-block:: javascript

   <code here>

That'll ensure syntax highlighting is correct.

Definitions should be indented 4 spaces (here and below).

Do we have a default?

Above, we don't use colons after the name/type, but we do here. We should be consistent.

This can, I think, be:
.. code-block:: ini

   <code...>

How about a simple /usr/local/bin/rb-gateway and /etc/rb-gateway/? I know some things like /opt/rb-gateway/, but I feel like that's less standard and more prone to confusing people.

Can you add an rbgateway-installation anchor here?

I feel like we should provide more guidance here, and we should link to the download page (it'll be https://www.reviewboard.org/downloads/rbgateway/).
I also think we can do something useful with providing a handy redirect on the site that points to the latest download (say, https://www.reviewboard.org/downloads/rbgateway/latest/), since the URL will be predictable and we know the version information on the server. With that, we can have something like:
You can `download the latest version`_ of ``rb-gateway`` or view the
`downloads page`_ for other options. Once downloaded, place the binary
somewhere on your server (for example, on Linux,
:file:`/usr/local/bin/rb-gateway`) and make it executable.

You'll also need a place to store the configuration files (for example,
:file:`/etc/rb-gateway/`).

For example, to get started quickly on Linux:

    $ sudo curl https://www.reviewboard.org/downloads/rbgateway/latest/ \
           -O /usr/local/bin/rb-gateway
    $ sudo chmod +x /usr/local/bin/rb-gateway
    $ sudo mkdir /etc/rbgateway


Once installed, follow the :ref:`configuration instructions <rbgateway-configuration>`
to finish setting up your server.

Can you add:

ExecReload=/bin/kill -HUP $MAINPID


This allows users to do systemctl reload rb-gateway
Also, do you mind adding this to the unit file as well?

Looking good.

I'm guessing we'd want /etc/rb-gateway/rb-gateway.conf, since there's also a webhooks.conf, right?

I realized the flaw with my idea here is that we have a version per platform. So maybe latest/linux_amd64/, which would map to the rbgateway-1.0-linux-amd64 (or, say, rbgateway-1.0-windows-amd64.exe).

Ship It!