Add a script to download the latest version.

[FGasper]

This facilitates use in CI.

[autarch]

I think there's a simpler way to do this.

[autarch]

The instructions tell people to use curl to fetch this script, but then it uses wget internally. I think it should curl since we know they already have that installed.

[autarch]

But maybe this isn't needed at all.

[FGasper]

Switched to curl.

[autarch]

I think this is more complex than it needs to be. Once you know the filename you want to download, you can download this: https://github.com/mongodb-labs/migration-verifier/releases/latest/download/$FILENAME

There's no need to hit the API and parse the response.

This does mean you need to calculate the filename directly instead of getting it from the API response, but it seems a lot simpler. You can see how I do this for ubi at https://github.com/houseabsolute/ubi/blob/master/bootstrap/bootstrap-ubi.sh

[FGasper]

I’d rather not build in a dependency on the filename format.

OK to keep as-is?

[autarch]

Sure, that's fine. But I'd note that we do control the filename!

[FGasper]

You know that & I know that, but the next maintainer may be a new hire or intern.

[autarch]

LGTM!