`appendVDom` need real dom

[artemave]

This code

hyperdom.appendVDom(h('div'), {render: () => 'hello'})

Fails with

     ReferenceError: window is not defined
      at new Mount (node_modules/hyperdom/mount.js:10:44)
      at start (node_modules/hyperdom/rendering.js:64:15)
      at startAttachment (node_modules/hyperdom/rendering.js:56:12)
      at Object.exports.appendVDom (node_modules/hyperdom/rendering.js:34:10)
      at Context.<anonymous> (test/hyperdomIntegrationSpec.js:44:14)

Looks as if deep down hyperdom relies on real window and document being available.

[dereke]

I think you can pass in window as an option. Then use the global module to get a window