Update flutter sdk schema for 1.0.1 release

Author: AbdullahDiaa

example/pubspec.lock

@@ -158,4 +158,4 @@ packages:
     version: "2.0.8"
 sdks:
   dart: ">=2.9.0-14.0.dev <3.0.0"
-  flutter: ">=0.1.4 <2.0.0"
+  flutter: ">=1.10.0 <2.0.0"

pubspec.yaml

@@ -6,7 +6,7 @@ repository: https://github.com/pushbots/flutter-sdk
 
 environment:
   sdk: ">=2.1.0 <3.0.0"
-  flutter: ">=0.1.4 <2.0.0"
+  flutter: ">=1.10.0 <2.0.0"
 
 dependencies:
   flutter:
@@ -19,5 +19,9 @@ dev_dependencies:
 
 flutter:
   plugin:
-    androidPackage: com.pushbots_flutter
-    pluginClass: PushbotsFlutterPlugin
+    platforms:
+      android:
+        package: com.pushbots_flutter
+        pluginClass: PushbotsFlutterPlugin
+      ios:
+        pluginClass: PushbotsFlutterPlugin