Add ability to receive calls for iOS

BUG=2701
R=fischman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/7989005

Patch from Sajid Hussain <shussain@temasys.com.sg>.

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5518 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/examples/ios/AppRTCDemo/APPRTCAppClient.h

@@ -47,6 +47,7 @@
 
 @property(nonatomic, assign) id<ICEServerDelegate> ICEServerDelegate;
 @property(nonatomic, assign) id<GAEMessageHandler> messageHandler;
+@property(nonatomic, assign) BOOL initiator;
 
 - (void)connectToRoom:(NSURL *)room;
 - (void)sendData:(NSData *)data;