 <p>you only have configured what pathes to use you should create a task like so:</p> <pre><code>grunt.task({ // Do Stuff here }) </code></pre> <p>There is more information on grunt tasks here: <a href="http://gruntjs.com/api/grunt.task" rel="nofollow noreferrer">http://gruntjs.com/api/grunt.task</a></p>