Template support landed in nickel.rs

I'm very happy to announce that Simon Persson just landed support for mustache templates for nickel.

Take a look at the [documentation](http://docs.nickel.rs/nickel/struct.Response.html#method.render) and the [example](https://github.com/nickel-org/nickel.rs/blob/3754e89f2cb89323b972cbcd9f7601d9c731aade/examples/example_template.rs)

Go check it out!