RNRF expo example doesnt work in android

For expo version, normal react native version works fine.

### Version
Tell us which versions you are using:

- react-native-router-flux
- react v16.3.1
- react-native: expo 30 (what example is using)

### Expected behaviour
should work

### Actual behaviour
shows this in red
TypeError: (0, _reactNavigation.createAppContainer) is not a function. (In '(0, _reactNavigation.createAppContainer)(Navigator)', '(0, _reactNavigation.createAppContainer)' is undefined)


### Steps to reproduce
For non-obvious bugs, please fork this component, modify Example project to reproduce your issue and include link here.

1. I followed thats stated in the main page (which is this)

Get the code
git clone https://github.com/aksonov/react-native-router-flux.git
cd react-native-router-flux/examples/[expo|react-native|redux]
(Here I did cd react-native-router-flux/examples/expo)

Installing dependencies
yarn

Run it
yarn start

2. then went to expo cli and clicked to run on android emulator (same thats npm run android)
3. error show up

### Reproducible Demo

same that in "Steps to reproduce"