A reference resolution does not match RFC3986

[TakashiSasaki]

There is a case that does not match RFC 3986.

In RFC 3986 Section 5.4 Reference Resolution Examples,
a relative URI reference //g against for the base URI http://a/b/c/d;p?q
should be resolved to http://g, whereas URI.js brings different result http://g/.

Here is a code.

var x = new URI("//g" , "http://a/b/c/d;p?q");
console.log(x.toString());

We get http://g/ in the console.
I expect it to be http://g.