remove assets + add script build release apk

Author: huynhsamha

android/app/src/main/res/drawable-mdpi/assets_icons_logo_white.png

@@ -17,7 +17,9 @@
     "lint:fix": "eslint ./ --fix",
     "clean:ios": "rm -rf ./ios/build/",
     "clean:android": "rm -rf ./android/build/ ./android/app/build/",
-    "clean": "npm run clean:ios && npm run clean:android"
+    "clean": "npm run clean:ios && npm run clean:android",
+    "bundle": "react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/",
+    "build:android": "npm run bundle && rm -rf android/app/src/main/res/drawable-* && cd android && ./gradlew assembleRelease"
   },
   "dependencies": {
     "axios": "^0.18.0",