airbnb/rendr-app-template — pull request #45 by shebson (2013-08-30 05:54:47+00:00)
Title: Support Internet Explorer (avoid setting __proto__)

By setting Router.prototype instead of Router.prototype.__proto__, the example app now works in IE9 and IE10.

A mutable __proto__ won't be supported by Internet Explorer until the release of IE11, and is not a part of the ES5 standard.