Update pubspec.yaml

Author: cloudwebrtc

pubspec.yaml

@@ -10,7 +10,7 @@ description: A new Flutter application.
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+  sdk: ">=2.2.0 <3.0.0"
 
 dependencies:
   flutter:
@@ -19,9 +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:
-    git:
-      url: https://github.com/cloudwebrtc/flutter-webrtc.git
+  flutter_webrtc: ^0.2.2
   shared_preferences: 0.5.2
 
 dev_dependencies: