Render and sanitize readme.md just like github would.

Basically, it's node.js version for this: https://github.com/github/markup

But only for markdown for now, because that's what io.js packages use mostly.

API

require('render-readme')('Hello, *world*!')

// outputs '<p>Hello, <em>world</em>!</p>\n'

Features

• the basic rendering is commonmark + gfm extensions (emphasis slightly differs, but nobody cares anyway)
• html is sanitized, the configuration is similar to github stuff (using sanitize-html)
• syntax highlighting (using highlight-js for this one)
• YAML metadata on top of markdown documents is rendered to a table
• anchors for headers (<a name="blah"> instead of <a id="user-content-blah">, but should be good enough)