rewrite quickstart page, #22900

akka-docs/src/test/scala/quickstart/HelloWorldApp.scala

@@ -1,32 +0,0 @@
-//#full-example
-package quickstart
-
-import akka.actor.{ Actor, ActorRef, Props, ActorSystem }
-import scala.io.StdIn
-
-object HelloWorldApp {
-  def main(args: Array[String]): Unit = {
-    //#create-send
-    val system = ActorSystem("hello-world-actor-system")
-    try {
-      // Create hello world actor
-      val helloWorldActor: ActorRef = system.actorOf(Props[HelloWorldActor], "HelloWorldActor")
-      // Send message to actor
-      helloWorldActor ! "World"
-      // Exit the system after ENTER is pressed
-      StdIn.readLine()
-    } finally {
-      system.terminate()
-    }
-    //#create-send
-  }
-}
-
-//#actor-impl
-class HelloWorldActor extends Actor {
-  def receive = {
-    case msg: String => println(s"Hello $msg")
-  }
-}
-//#actor-impl
-//#full-example