title: Simple Websocket in scala / akka / play
body: <p>I would like to create a simple Websocket application using Scala / Akka / Play.</p>
  
  <p>What I see from the examples (such as the <a href="https://github.com/playframework/playframework/tree/master/samples/scala/websocket-chat" rel="noreferrer">webchat</a> or the <a href="http://www.parleys.com/play/51c38b03e4b0ed877035686c/chapter0/about" rel="noreferrer">recent talk at the Scala Days</a>), is a blend between JavaScript / Coffeescript, html templates and so on.</p>
  
  <p>The clients of my Websocket application will be also native mobile apps (Android, iOS), so I need to think "out of the browser".</p>
  
  <p>How can I create a websocket application that can simply push a "hello" string?</p>