title: grunt glob file with regex?
body: <p>I want to read a file with grunt like this:</p>
  
  <pre><code>grunt.file.read(filepath [, options])
  </code></pre>
  
  <p>but my filepath is a regex:</p>
  
  <pre><code>src/dist/res/js/*.index.js
  </code></pre>
  
  <p>so I want to find all file end with <code>.index.js</code>, then read it.</p>