Provide mechanism to convert to case classes more easily than .map

[freeeve]

Right now you can do:

case class MyCaseClass(n:String, a:Int)

Cypher("start n=node(1) return n.name, n.age")().map(row =>
  MyCaseClass(row[String]("n.name"), row[Int]("n.age")))
// returns Stream[MyCaseClass]

I'd rather make something like:

Cypher("start n=node(1) return n.name, n.age")().as[MyCaseClass]
// returns Stream[MyCaseClass]

[freeeve]

cleaning up issues. this probably won't get into anormcypher until it's easier to do without reflection and weird hacks. map() isn't so bad, after all.