Standalone ReactNative Packager without framework code.

1. bundle-split, solution from facebook/react-native#10804
2. use module name as before (ps: core.bundle and app.bundle are different bundle session, so module ids may conflict)

"devDependencies": {
  "rn-packager": "~0.12.0",
  "react-native": "0.42.3",
  "react": "~15.4.1"
}

Now u can use manifest.json file to generate core modules.

1. Bundle ur core bundle and output manifest.json
2. Bundle ur app bundle with manifest.json that Step 1 generated.

$ rnpackager bundle --entry-file node_modules/react-native/Libraries/react-native/react-native.js --bundle-output core.ios.bundle --platform ios --manifest-output core.ios.manifest.json

rnpackager bundle --entry-file foo.js --bundle-output foo.ios.bundle --platform ios --manifest-file core.ios.manifest.json

$ rnpackager start

$ cd tests
$ npm i
$ rnpackager start

visit:

• http://localhost:8081/index.ios.bundle?platform=ios
• http://localhost:8081/index.android.bundle?platform=android