title: Gruntfile.js grunt-contrib-uglify not found
body: <p>I'm new to grunt and still finding my feet.</p>
  
  <p>I have grunt installed and uglify with</p>
  
  <pre><code>npm install grunt-contrib-uglify --save-dev
  </code></pre>
  
  <p>I have the following in the gruntfile.js to test minifying css files</p>
  
  <pre><code>  // Code example 01-minify
    module.exports = function(grunt) {
  
    // Load the plugin that provides the "uglify" task.
    grunt.loadNpmTasks('grunt-contrib-uglify');
  
    // Project configuration.
    grunt.initConfig({
      uglify: {
          target1: {
              src: 'styles.css',
              dest: 'styles.min.css'
          }
      }
    });
    // Define the default task
    grunt.registerTask('default', ['uglify']);
    };
  </code></pre>
  
  <p>If I run <code>grunt</code>, I get</p>
  
  <pre><code>  Local Npm module "grunt-contrib-uglify" not found. Is it installed?
    Warning: Task "uglify" not found. Use --force to continue.
  </code></pre>