[rattray]

    brew tap aspnet/dnx
    brew update
    brew install dnvm
    dnvm upgrade

From https://github.com/aspnet/Home/blob/dev/README.md#os-x

There are some hello world examples in the repo listed above as well. If you'd like, you can develop with the recently announced Visual Studio Code, announced ~yesterday.

I think this is still Mono, but full MSFT support of *Nix is said to be underway.

[gagege]

Also, if you use Yeoman, make sure you upgrade your aspnet generator. I had issues until I realized the version I had was generating a project with out of date dependencies.