Firebase Remote Config and Firebase 9.2.0

I have talked about Firebase Remote Config and Firebase 9.2.0 in general at Shinsen Dev. a small study conference in Japan.

* https://firebase.google.com/docs/android/setup
* https://firebase.google.com/docs/remote-config/#key_functions
* https://firebase.google.com/docs/remote-config/#policies_and_limits
* https://firebase.google.com/docs/remote-config/parameters#limits_on_parameters_and_conditions
* https://firebase.google.com/docs/remote-config/android#caching
* https://firebase.google.com/docs/reference/android/com/google/firebase/remoteconfig/FirebaseRemoteConfigFetchThrottledException

* http://stackoverflow.com/questions/37501124/firebaseremoteconfig-fetch-does-not-trigger-oncompletelistener-every-time
* http://stackoverflow.com/questions/37342403/firebaseapp-with-name-default-doesnt-exist
* http://stackoverflow.com/questions/37346363/java-lang-illegalstateexception-firebaseapp-with-name-default

* https://github.com/firebase/quickstart-android/issues/75