title: Run a command after a grunt task finishes?
body: <p>I want to <a href="https://stackoverflow.com/questions/10456865/running-a-command-in-a-grunt-task">run a command</a> but <strong><em>after</em></strong> a task finishes in grunt.</p>
  
  <pre><code>uglify: {
      compile: {
          options: {...},
          files: {...}
      }
      ?onFinish?: {
          cmd: 'echo done!',
          // or even just a console.log
          run: function(){
              console.log('done!');
          }
      }
  },
  </code></pre>
  
  <p>Either run a command in shell, or even just be able to <code>console.log</code>. Is this possible?</p>