Fix bug in HTML rendering in Node.js
Fix bug in HTML rendering in Node.js

When supplied with a Cheerio instance (instead of a string of HTML), the
Node.js-specific `html` and `append` methods should reference the
complete outer HTML (not just the contents) as generated by Cheerio's
`render` method.

GerHobbelt/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,SimenB/backbone.layoutmanager,tbranyen/backbone.layoutmanager,SimenB/backbone.layoutmanager,tbranyen/backbone.layoutmanager