Merge pull request #277 from heroku/travis

Travis

.travis.yml

+language: bash
+sudo: required
+services:
+  - docker
+install: docker pull heroku/cedar:14
+script: make test-cedar-14

README.md

@@ -3,7 +3,8 @@
 ![nodesjs](https://cloud.githubusercontent.com/assets/51578/8882955/3f0c3980-3219-11e5-8666-bc9c926a7356.jpg)
 
 This is the official [Heroku buildpack](http://devcenter.heroku.com/articles/buildpacks) for Node.js apps.
-If you fork this repository, please **update this README** to explain what your fork does and why it's special.
+
+![Test status](https://travis-ci.org/heroku/heroku-buildpack-nodejs.svg)
 
 ## Documentation