Fixed missing Firebase include for node
Merge pull request #29 from firebase/node

Fixed missing Firebase include for node
cleanup from review
Merge branch 'master' into v3

Conflicts:
	dist/geofire.min.js
	examples/fish1/js/vendor/geofire.min.js
	examples/fish2/js/vendor/geofire.min.js
	examples/fish3/js/vendor/geofire.min.js
	examples/sfVehicles/js/vendor/geofire.min.js
added migration script