Update README.md

Author: samtstern

README.md

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 # FirebaseUI for Android — UI Bindings for Firebase
 
-[![Build Status](https://travis-ci.org/samtstern/FirebaseUI-Android.svg?branch=master)](https://travis-ci.org/samtstern/FirebaseUI-Android)
+[![Build Status](https://travis-ci.org/firebase/FirebaseUI-Android.svg?branch=master)](https://travis-ci.org/firebase/FirebaseUI-Android)
 
 FirebaseUI is an open-source library for Android that allows you to 
 quickly connect common UI elements to [Firebase](https://firebase.google.com)