Restoring Firebase initialization on startup

[briantq]

THIS IS UNTESTED

I worked off the PR #784 to add Crashlytics and change Firebase initialization to try to revert not initializing Firebase. I have not had a chance to test this, and unfortunately don't have an Android project I can even test this on, so definitely appreciate any help by installing the branch and see if it resolves the issue.

I wanted to get it out so people can test and make any suggestions on the code change. I will add a comment when I am able to test with iOS.

[briantq]

@bpdinteractive confirmed this appears to fix the messaging issue on Android. I tried it in my iOS app and it appears to be working. @soumak77 is there anyone else we should get to test/review this change?

[qswinson]

I have verified the pull request removes the need to call initFirebase for both iOS and Android however it does still require initAnalytics to be added if you want that feature enabled. I'm not sure if this is a breaking change from the previously released version but it was for the very old version I updated from (0.1.25).

[soumak77]

Seems tested enough to get merged. I'll release v1.1.4 with this fix once I get home later today.

[briantq]

@qswinson Nice to see a fellow Austinite :) The issue you were having with initAnalytics should be resolved in a different pull request and should be in v2.0.1. Please note, there is still an issue with the install of v2.0.1 on Android that that's an outstanding PR for, but it should be working on iOS fully. Let us know if you see something different