Fixandroidbuildnumbertypeinconsistency

Description

Fixed issue #214

Parse the return integer from PackageManager in to a string, also returns "0" by default instead of 0.

Compatibility

| OS | Implemented |
| ------- | :---------: |
| iOS | ✅ |
| Android | ✅ |
| Windows | ✅ |

Checklist

• [x] I have tested this on a device/simulator for each compatible OS


• [x] I added the documentation in
  

  1

  README.md

  
  


• [x] I mentioned this change in
  

  1	CHANGELOG.md

  
  


• [x] I updated the typings files (
  

  1	deviceinfo.d.ts

  ,

  1	deviceinfo.js.flow

  )



• [x] I updated the web polyfill (
  

  1	web/index.js

  )

该提问来源于开源项目：react-native-device-info/react-native-device-info