title: Gulp-uglify not producing minified output file
body: <p>I've been trying to minify my js files, but I can't get gulp to produce an output file. To keep things simple, I created a test.js file in my root directory, and I'm trying to get gulp to compress and send a minified file to my public folder. I've been banging my head on this one for a while, so thanks in advance! Here's my app.js file</p>
  
  <pre><code>var gulp = require('gulp');
  var uglify = require('gulp-uglify');
  var pump = require('pump');
  
  var app = express();
  
  // view engine setup
  app.set('views', path.join(__dirname, 'app_server', 'views'));
  app.set('view engine', 'jade');
  
  gulp.task('compress', function(cb) {
    pump([
        gulp.src('./test.js'),
        uglify(),
        gulp.dest('./public')
      ],
      cb
    );
  }); 
  </code></pre>
  
  <p>My test.js file</p>
  
  <pre><code>var myFunc = function(aa, bb) {
      return aa + bb;
  };
  
  myFunc(1, 2);
  </code></pre>
  
  <p>And my dependencies</p>
  
  <pre><code>  "devDependencies": {
      "gulp": "^3.9.1",
      "gulp-uglify": "^3.0.0",
      "pump": "^1.0.2"
    }
  </code></pre>