title: iOS 8 CoreBluetooth deprecated RSSI methods
body: <p>So from reading the <code>CBPeripheralDelegate</code> documentation, it appears that <code>RSSI</code> and <code>peripheralDidUpdateRSSI:error:</code> were deprecated with iOS 8.</p>
  
  <p>Xcode warning:  </p>
  
  <blockquote>
    <p>'rssi' was deprecated in iOS 8.0</p>
  </blockquote>
  
  <p>I noticed that my signal strength indicator was no longer being updated, so I did some research and found a new method (<code>[CBPeripheralDelegate peripheral:didReadRSSI:error:]</code>) that supposedly get called back asynchronously after calling the <code>readRSSI</code> method. Unfortunately, this method does not seem to get called back either, even though I did set the parent class as the CBPeripheral delegate. </p>
  
  <p>Has anyone else had issues with the iOS 8 CoreBluetooth updates?</p>