* **BREAKING** The CLI no longer supports being run in Node 6 environments.
* Modify RTDB emulator to publish triggers to the functions emulator

* **BREAKING** The CLI no longer supports being run in Node 6 environments.
* **BREAKING** Modify RTDB emulator to publish triggers to the functions emulator
* RTDB Emulator comes up with open rules by default

Add note about breaking change and open emulator default rules
Add note about breaking change and open emulator default rules
