Show symbolic links as redirects

[piranna]

Add an option to show the symbolic links as 301 redirections to the file location instead of return the file content.

[dougwilson]

We could probably do this. I probably won't get to it, but if you can provide a PR (and please ensure it is cross platform), then I can certainly accept it.

[piranna]

I've just done a pull-request to add this feature :-)