[added] .travis.yml config, shields.io badge to integrate with TravisCI hooks (#150)

closes #142

Author: whichsteveyp

Diff for: .travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - "0.10"
-before_script:
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
+  - "4"
+  - "6"
+  - "stable"
+sudo: false

Diff for: README.md

@@ -3,6 +3,8 @@ React Autocomplete
 
 Accessible, extensible, Autocomplete for React.js.
 
+[![Travis build status](http://img.shields.io/travis/reactjs/react-autocomplete.svg?style=flat)](https://travis-ci.org/reactjs/react-autocomplete/)
+
 Docs coming soon, for now just look at the `propTypes` and [examples](https://reactjs.github.io/react-autocomplete/) :)
 
 Trying to settle on the right API, and then focus hard on accessibility,