title: CoreBluetooth pairing feedback / callback
body: <p>It feels like I'm missing something here, but how can I get feedback on whether pairing a passcode protected peripheral failed or succeeded?</p>
  
  <p>When I to connect a peripheral which is password protected the password UIAlertView pops up and the peripheral connects (didConnectPeripheral is called) and disconnects (didDisconnectPeripheral) immediately. </p>
  
  <pre><code>[bluetoothManager connectPeripheral:peripheral options:nil];
  </code></pre>
  
  <p>Now whether I enter the correct passcode, the wrong passcode or simply press cancel: on all occasions I don't receive any feedback from the CoreBluetooth delegate methods.</p>
  
  <p>The question is how can I get feedback on this process?</p>