Fix parseURL in Internet Explorer

I added various workarounds to make the tests pass in IE11.

closes pretenderjs#151

pretender.js

@@ -29,8 +29,30 @@ function parseURL(url) {
  // TODO: something for when document isn't present... #yolo
  var anchor = document.createElement('a');
  anchor.href = url;
- anchor.fullpath = anchor.pathname + (anchor.search || '') + (anchor.hash || '');
- return anchor;
+
+ if (!anchor.host) {
+ anchor.href = anchor.href; // IE: load the host and protocol
+ }
+
+ var pathname = anchor.pathname;
+ if (pathname.charAt(0) !== '/') {
+ pathname = '/' + pathname; // IE: prepend leading slash
+ }
+
+ var host = anchor.host;
+ if (anchor.port === '80' || anchor.port === '443') {
+ host = anchor.hostname; // IE: remove default port
+ }
+
+ return {
+ host: host,
+ protocol: anchor.protocol,
+ search: anchor.search,
+ hash: anchor.hash,
+ href: anchor.href,
+ pathname: pathname,
+ fullpath: pathname + (anchor.search || '') + (anchor.hash || '')
+ };
 }