show events in Firebase Debug View for debug build

update version

docs fixes

Update README.md

Check argument count for existence of optional table parameter (#7)

* Check argument count for existence of optional table parameter

* Replace argc check with lua_isnoneornil as discussed in review

App options (#5)

* Read optional app initialisation options

* Disable FirebaseInitProvider on Android if firebase.no_auto_init is specified

* Update documentation with description of optional parameter to init()

Upgrade to C++ SDK 8.10.0 and iOS SDK 8.13.0 (#3)

* Upgrade to cpp 8.10.0 and ios 8.13.0

* Update bob.yml

Add `FirebaseInstallations.framework`

Add get_auth_token (#1)

* Android implementation of GetAuthToken

* Add firebase/installations.h

* Android Firebase Installations library

* iOS Firebase Installations libs

* Mention get_auth_token in documentation

* tabs -> spaces

* Add Gradle dependency

* Add get_auth_token to API file

* Rename auth token variables/functions for clarity

Added missing iOS frameworks