feat: add support for macos

Signed-off-by: Amogh Lele <amolele@gmail.com>

example/android/app/build.gradle

@@ -24,7 +24,7 @@ if (flutterVersionName == null) {
 }
 
 android {
-    namespace = "com.example.readability_example"
+    namespace = "bio.kat.readability_example"
     compileSdk = flutter.compileSdkVersion
     ndkVersion = flutter.ndkVersion
 

example/android/app/src/main/kotlin/bio/kat/readability_example/MainActivity.kt

@@ -0,0 +1,5 @@
+package bio.kat.readability_example
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity()