Installation problem.

Hi,

I followed the installation direction as described in this repo.
However, I got the following error when I run `react-native run-android`.
Am I missing anything?

```
JS server already running.
Running /Users/me/Library/Android/sdk/platform-tools/adb reverse tcp:8081 tcp:8081
Building and installing the app on the device (cd android && ./gradlew installDebug...
google-services plugin could not detect any version for com.google.android.gms or com.google.firebase, default version: 9.0.0 will be used.
please apply google-services plugin at the bottom of the build file.

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> Cannot evaluate module react-native-firebase-analytics : Configuration with name 'default' not found.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 0.929 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html
```

Thanks for your help.