Latest NPM publish does not include render-voyager-page.js fix from #357

Hi,

I stumbled across Voyager for the first time today - great work!

Setting up the express middleware as per the readme leaves a dead "Loading" page in the browser. I can see this issue has already been fixed in #357 but the version hosted on NPM does not include this fix. I've patched my local version manually so I am able to use the software in the meantime.

I'm raising this issue primarily to draw attention as it affects all of the middleware offered - I think that's a big deal and would be considering a patch release as soon as practical.

Thanks again, Matt