Release 6.4.0
- Merge pull request #23 from kanzitelli/notifications (09ef15f)
- small changes (77fdfa2)
- readme updated & notifications guide (6e98ae4)
- notifications service added (ad5c326)
- react-native-notifications added (06eaf13)
- [iOS] notifications set up (280671a)
- [Android] notifications set up (8c555fe)
- Update .gitignore (a424918)