title: How to pass argument to gulp?
body: <p>I am using gulp and gulp-shell packages for a php Laravel application, I just need to know if this is possible to pass argument from cmd to <code>gulpfile.js</code> ? this is my file:</p>
  
  <pre><code> gulp.task('default',  shell.task([  
     'echo user',    
    ]));
  </code></pre>
  
  <p>Question:
  Is it possible to pass an argument from command-line when running gulp and then inside the <code>gulpfile</code> print it out instead of <code>user</code>?</p>