Move view logic into separate npm package.

[Ferrus91]

I a wondering if it might be possible to separate View.js into a separate npm repository. It is already possible to change the default View code, and the View.js file doesn't have any shared imports from other parts of the file. I would find it quite useful for a personal project to be able to use this separately.

[wesleytodd]

I believe that was the intent behind creating this repo: https://github.com/pillarjs/views

I am unsure what why this was not done, but maybe @dougwilson would remember.