Merge pull request #232 from firebase/proppy-patch-12

README: update travis badge url

Author: proppy

README.md

@@ -1,6 +1,6 @@
 # FirebaseArduino
 
-[![Build Status](https://travis-ci.org/googlesamples/firebase-arduino.svg?branch=master)](https://travis-ci.org/googlesamples/firebase-arduino)
+[![Build Status](https://travis-ci.org/firebase/firebase-arduino.svg?branch=master)](https://travis-ci.org/firebase/firebase-arduino)
 [![Join the chat at https://gitter.im/googlesamples/firebase-arduino](https://badges.gitter.im/googlesamples/firebase-arduino.svg)](https://gitter.im/googlesamples/firebase-arduino?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Documentation Status](https://readthedocs.org/projects/firebase-arduino/badge/?version=latest)](http://firebase-arduino.readthedocs.io/en/latest/?badge=latest)