put back a test that library can be required without errors

Author: targos

.travis.yml

@@ -0,0 +1,5 @@
+language: node_js
+node_js:
+  - "0.12"
+  - "iojs"
+sudo: false

README.md

@@ -1,6 +1,7 @@
 # ml
 
   [![NPM version][npm-image]][npm-url]
+  [![build status][travis-image]][travis-url]
   [![David deps][david-image]][david-url]
   [![npm download][download-image]][download-url]
 
@@ -85,6 +86,8 @@ require(['path/to/ml/dist/ml.min'], function (ML) {
 
 [npm-image]: https://img.shields.io/npm/v/ml.svg?style=flat-square
 [npm-url]: https://www.npmjs.com/package/ml
+[travis-image]: https://img.shields.io/travis/mljs/ml/master.svg?style=flat-square
+[travis-url]: https://travis-ci.org/mljs/ml
 [david-image]: https://img.shields.io/david/mljs/ml.svg?style=flat-square
 [david-url]: https://david-dm.org/mljs/ml
 [download-image]: https://img.shields.io/npm/dm/ml.svg?style=flat-square

package.json

@@ -4,6 +4,7 @@
   "description": "Machine learning tools",
   "main": "src/index.js",
   "scripts": {
+    "test": "node -p \"void(require('./'));console.log('OK')\"",
     "build": "gulp build"
   },
   "config": {