title: iOS -BTLE send data from central to peripheral
body: <p>We are developing application using BTLE iOS.we want to notify peripheral that the has been received by the central with string it is more like a chat application. 
  I have seen some question in stackOverflow <a href="https://stackoverflow.com/questions/19130006/corebluetooth-how-can-the-peripheral-manager-know-that-the-central-received-an">CoreBluetooth: How can the peripheral manager know that the central received an indication?</a></p>
  
  <p>But i don't know hoe to proceed.. Any help is highly appreciate</p>