Fix URL in "browser field" link

README.md

@@ -4,7 +4,7 @@ Browser-friendly inheritance fully compatible with standard node.js
 This package exports standard `inherits` from node.js `util` module in
 node environment, but also provides alternative browser-friendly
 implementation through [browser
-field](https://gist.github.com/shtylman/4339901). Alternative
+field](https://gist.github.com/defunctzombie/4339901). Alternative
 implementation is a literal copy of standard one located in standalone
 module to avoid requiring of `util`. It also has a shim for old
 browsers with no `Object.create` support.