Nav.scala

val api = new Namespace("api"){
  val v1 = new Namespace("v1"){
    GET on "/" to Application.index _
    val todos = resources("todos", Todos)
    val posts = resources("posts", Posts)
    val comments = resources("comments", Comments)
  }
  
  val v1_1 = new Namespace("v1.1"){
    GET on "/" to Application.index _
    val todos = resources("todos", Todos)
    val posts = resources("posts", Posts)
    val comments = resources("comments", Comments)
    val tags = resources("tags", Tags)
  }
  
  val v2 = new Namespace("v2"){
    GET on "/" to Application.index _
    val posts = resources("posts", Posts)
    val comments = resources("comments", Comments)
    val tags = resources("tags", Tags)
    val categories = resources("categories", Categories)
  }
}