Add more detail to initialize include.
Add more detail to initialize include.

Change-Id: I339e8e2a19e783dcf0b252e37b70b54910e55cc8

DES157/quickstart-js,firebase/quickstart-js,DaryaBeda/firebase_,firebase/quickstart-js,firebase/quickstart-js,DES157/quickstart-js,DaryaBeda/firebase_,uhntiss/quickstart-js,uhntiss/quickstart-js,uhntiss/quickstart-js