1.) npm install --save react-native-bluetooth-cross-platform
2.) add files in './node_modules/react-native-bluetooth-cross-platform/ios/react-native-bluetooth-cross-platform' to project. When XCode asks to create bridging header, click YES. Delete the bridging header XCode generates for you.
3.) In your project's Build Settings, set bridging header to $SRCROOT/../node_modules/react-native-bluetooth-cross-platform/ios/react-native-bluetooth-cross-platform/Bridge.h
4.) Add 'Underdark' and 'ProtocolBuffers' to Link Binary With Libraries Build Phase
5.) Add a new copy files phase in Build Phases. Set destination to 'Frameworks' and drag 'Underdark' and 'ProtocolBuffers' from the added group to the Copy Files area.
6.) Under Framework Search Paths in the project's' Build Settings, add '$(SRCROOT)/../node_modules/react-native-bluetooth-cross-platform/ios/react-native-bluetooth-cross-platform/' and set to recursive.
