Fix a typo and update plugin version to 0.1.6.

Author: cloudwebrtc

lib/src/call_sample/data_channel_sample.dart

@@ -54,7 +54,7 @@ class _DataChannelSampleState extends State<DataChannelSample> {
         });
       };
 
-      _signaling.onDtaChannel = (channel){
+      _signaling.onDataChannel = (channel){
         _dataChannel = channel;
       };
 

lib/src/call_sample/signaling.dart

@@ -42,7 +42,7 @@ class Signaling {
   StreamStateCallback onRemoveRemoteStream;
   OtherEventCallback onPeersUpdate;
   DataChannelMessageCallback onDataChannelMessage;
-  DataChannelCallback onDtaChannel;
+  DataChannelCallback onDataChannel;
 
   Map<String, dynamic> _iceServers = {
     'iceServers': [
@@ -388,7 +388,7 @@ class Signaling {
     };
     _dataChannels[id] = channel;
 
-    if (this.onDtaChannel != null) this.onDtaChannel(channel);
+    if (this.onDataChannel != null) this.onDataChannel(channel);
   }
 
   _createDataChannel(id, RTCPeerConnection pc, {label: 'fileTransfer'}) async {

pubspec.yaml

@@ -19,7 +19,7 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.2
-  flutter_webrtc: 0.1.5
+  flutter_webrtc: 0.1.6
   shared_preferences:
 
 dev_dependencies: