Add Travis CI badge

.npmignore

@@ -8,3 +8,4 @@ chai-tests
 nodejs-tests
 .dockerignore
 dockerfile
+.travis.yml

.travis.yml

@@ -0,0 +1,4 @@
+sudo: required
+language: node_js
+node_js:
+  - "node"

README.md

@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.org/HuddleEng/Resemble.js.svg?branch=master)](https://travis-ci.org/HuddleEng/Resemble.js)
+
 <img src="https://raw.github.com/HuddleEng/Resemble.js/master/demoassets/resemble.png" alt="Resemble.js" width="256"/>
 
 Analyse and compare images with Javascript and HTML5. [More info & Resemble.js Demo](http://huddleeng.github.io/Resemble.js/). Compatible with Node.js.