Update README.rst (#765)

README.rst

@@ -33,9 +33,12 @@ How to use
 
     >> import time
     >> import pychromecast
+    >> import zeroconf
 
-    >> # List chromecasts on the network, but don't connect
-    >> services, browser = pychromecast.discovery.discover_chromecasts()
+    >> # Create a browser which prints the friendly name of found chromecast devices
+    >> zconf = zeroconf.Zeroconf()
+    >> browser = pychromecast.CastBrowser(pychromecast.SimpleCastListener(lambda uuid, service: print(browser.devices[uuid].friendly_name)), zconf)
+    >> browser.start_discovery()
     >> # Shut down discovery
     >> pychromecast.discovery.stop_discovery(browser)
 
@@ -48,7 +51,7 @@ How to use
     >> # Start worker thread and wait for cast device to be ready
     >> cast.wait()
     >> print(cast.cast_info)
-    DeviceStatus(friendly_name='Living Room', model_name='Chromecast', manufacturer='Google Inc.', uuid=UUID('df6944da-f016-4cb8-97d0-3da2ccaa380b'), cast_type='cast')
+    CastInfo(services={ServiceInfo(type='mdns', data='Chromecast-Audio-42feced1d94238232fba92623e2682f3._googlecast._tcp.local.')}, uuid=UUID('42feced1-d942-3823-2fba-92623e2682f3'), model_name='Chromecast Audio', friendly_name='Living room', host='192.168.0.189', port=8009, cast_type='audio', manufacturer='Google Inc.')
 
     >> print(cast.status)
     CastStatus(is_active_input=True, is_stand_by=False, volume_level=1.0, volume_muted=False, app_id='CC1AD845', display_name='Default Media Receiver', namespaces=['urn:x-cast:com.google.cast.player.message', 'urn:x-cast:com.google.cast.media'], session_id='CCA39713-9A4F-34A6-A8BF-5D97BE7ECA5C', transport_id='web-9', status_text='')