Suggestion: Migration from react-native-router-flux to react-navigation

[waelmg]

react-native-router-flux started to have many unsolved issues, so I suggest migration to react-navigation.
Although router-flux is much simpler to use, react-navigation is up-to-date and will help us avoid the transitive dependency on it.
What do you think?

[xiaohui-hiwintech]

good idea