title: Mongodb scala driver doesn't insertOne document
body: <p>I try to save a document in mongodb 3.0.7 using scala 2.11.7 following the quick tour: <a href="http://mongodb.github.io/mongo-scala-driver/1.0/getting-started/quick-tour/" rel="nofollow">http://mongodb.github.io/mongo-scala-driver/1.0/getting-started/quick-tour/</a> But I run the example and nothing happen. The database, collection and document are not created.</p>
  
  <pre><code>  def main(args: Array[String]) {
      println("Start")
      val mongoClient: MongoClient = MongoClient()
      val database: MongoDatabase = mongoClient.getDatabase("mydb")
      val collection: MongoCollection[Document] = database.getCollection("test");
      val doc: Document = Document("_id" -&gt; 0, "name" -&gt; "MongoDB", "type" -&gt; "database",
        "count" -&gt; 1, "info" -&gt; Document("x" -&gt; 203, "y" -&gt; 102))
      val observable: Observable[Completed] = collection.insertOne(doc)
      observable.subscribe(new Observer[Completed] {    
        override def onNext(result: Completed): Unit = println("Inserted")
        override def onError(e: Throwable): Unit = println("Failed")
        override def onComplete(): Unit = println("Completed")
      })
  
      mongoClient.close()
      println("End")
    }
  </code></pre>
  
  <p>Console:</p>
  
  <pre><code>Start
  dic 13, 2015 3:05:16 PM com.mongodb.diagnostics.logging.JULLogger log
  INFORMACIÓN: Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
  dic 13, 2015 3:05:16 PM com.mongodb.diagnostics.logging.JULLogger log
  INFORMACIÓN: Opened connection [connectionId{localValue:1, serverValue:6}] to localhost:27017
  dic 13, 2015 3:05:16 PM com.mongodb.diagnostics.logging.JULLogger log
  INFORMACIÓN: Monitor thread successfully connected to server with description ServerDescription{address=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, version=ServerVersion{versionList=[3, 0, 7]}, minWireVersion=0, maxWireVersion=3, electionId=null, maxDocumentSize=16777216, roundTripTimeNanos=893710}
  End
  </code></pre>
  
  <p>What is missing?</p>