title: converting String to Data in swift 3.0
body: <p>I'm trying to convert a string to a data type. I thought this was all I needed but if I try to print it it just prints "12 bytes"</p>
  
  <pre><code>let tString = "Hello World!"
  if let newData = tString.data(using: String.Encoding.utf8){
      print(newData)
      self.peripheral?.writeValue(newData, for: positionCharacteristic, type: CBCharacteristicWriteType.withResponse)
  }
  </code></pre>
  
  <p>What am I doing wrong?</p>