Publish koop-provider-marklogic 2.0.0 on npm

[rjrudin]

Hello @rgwozdz - based on #165, we're reaching out to you to see if you are still able to publish our koop-provider-marklogic releases to npm. The output of npm pack is now a 12kb zip named koopjs-provider-marklogic-2.0.0.tgz - it's also attached to our 2.0.0 release page - https://github.com/koopjs/koop-provider-marklogic/releases/tag/2.0.0 .

In the comments in #165, you mention updating a changelog. We don't have a CHANGELOG.md file, we're just adding release notes to each release. If such a file is needed though, we're happy to create one.

Please let me know if you're still able to publish our releases to npm and any changes you require by us before doing so. Thanks!