fix: add build-extras to npm distribution (#1112)

Author: fadi-george

example/IonicCapOneSignal/README.md

@@ -22,6 +22,8 @@ adb --version
 
 Then run `ionic capacitor run android` and select the device to run on. This should open the emulator either standalone or in the Android Studio window.
 
+NOTE: If console (in the app) is empty then minimize the app then reopen it.
+
 ## iOS
 
 For iOS, you can run `ionic capacitor run ios`.

package.json

@@ -5,7 +5,8 @@
   "files": [
     "dist",
     "plugin.xml",
-    "src"
+    "src",
+    "build-extras-onesignal.gradle"
   ],
   "repository": {
     "type": "git",