Copy straight from our midnight task. ``` val uplo...

# kotlin-fuel

[kittinunf]

Copy straight from our midnight task.

val uploadResult = 
  fileResult.flatMap { file ->
    val (_, _, result) = Fuel.upload("<google play api>")
                                        .source { _, _ -> file }
                                        .name { "mercari.apk" }
                                        .responseObject(Serializer())
    result
  }