Fix travis ci, add travis badge

Author: joernb

.travis.yml

@@ -1,3 +1,4 @@
+language: node_js
 deploy:
   provider: npm
   email:

README.md

@@ -1,4 +1,6 @@
 # react-scripts-with-ssr
 
+[![Build Status](https://travis-ci.org/joernb/react-scripts-with-ssr.svg?branch=master)](https://travis-ci.org/joernb/react-scripts-with-ssr)
+
 This is a fork of [react-scripts](https://github.com/facebook/create-react-app/tree/master/packages/react-scripts), which adds support for server-side rendering (SSR).
 react-scripts is a part of [Create React App](https://github.com/facebook/create-react-app), which can be used with a customized version of react-scripts.