Fix for exceptions thrown by Firebase#101

Merged

auser merged 2 commits intofullstackreact:masterfrom

chaitanya-bhagavan:master

Nov 1, 2016

Commits on Oct 31, 2016

Fix enablePersistence should be called before any access to FIRDatabase
chaitanya-bhagavan
committed
Fix Default app has already been configured
chaitanya-bhagavan
committed