Add urlFormatter option

[jnordberg]

This allows to specify a url formatter function. Example:

var url = require('url');
var source = "[mylink](path/to/somewhere)";

marked.setOptions({
  urlFormatter: function(href) {
    return url.resolve('http://mydomain.com', href);
  }
});

console.log(marked(source)); // <p><a href="http://mydomain.com/path/to/somewhere">mylink</a></p>

[jnordberg]

@chjj any thoughts on this?

[dherman]

Consider this another vote for this feature — any interest in accepting the commit, @chjj?

Dave

[benatkin]

This is needed to generate sane HTML, too.

[chjj]

Going to redirect any discussion on this to #65. I'm not going to accept the PR because I'd rather have it be an option.