Routing by Header

So I have an API that I want to route by the header `Accept`. How do you do this with the routing in CI 3?

So if you nav to www.site.com/api/user it will look at the header Accept find the version in the header and then route to that controller class. I need this in order to manage api versions in the header.

You would need to extend the router then. CI router can not do this on its own.

Website: http://tomaz.lovrec.eu
GitHub: https://github.com/slax0rr
Twitter: https://twitter.com/slax0rr