koajs/static — pull request #13 by dionoid (2014-01-23 21:35:42+00:00)
Title: normalize root path for use on all OS's

Hi, this commit fixes the problem when using koa-static's example code on Windows (this currently gives "malicious path" errors).
Windows uses a different path-seperator, which is fixed by using `path.normalize(root)` inside the `serve()` method.