title: how to minify js files in order via grunt-contrib-uglify?
body: <p>I have a directory like below:</p>
  
  <p>/folder/b.js<br>
  /folder/jQuery.js<br>
  /folder/a.js<br>
  /folder/sub/c.js<br></p>
  
  <p>I want to minify all these js files in one js file <strong>in order</strong>:</p>
  
  <p>jQuery.js -> a.js -> b.js -> c.js</p>
  
  <p><strong>Q:</strong><br>
  1.How can I do it via grunt-contrib-uglify?(In fact, there are lots of files, it is impractical to specify all source filepaths individually)</p>
  
  <p>2.btw, How can I get unminified files when debug and get minified single file when release and no need to change <em>script tag</em> in html(and how to write the script tag)?</p>