A tiny firebase brain for riidbot.
npm install riiidbot-brain
FIREBASE_SECRET, FIREBASE_URL should be on environemnt variable.
B = require 'riiidbot-brain'
# firebase root ref can be accessed via B.root
root = B.root
keyRef = root.child 'key'
# callback will be called when authentication complete successfully
B.root.onAuth (auth) ->
return unless auth
# fetch data or other initialization process