title: whats the purpose of jquery.mobile-1.3.1.min.map in the jquery.mobile-1.3.1 distribution?
body: <p>When i downloaded the jquery.mobile-1.3.1 dist i see the following structure:</p>
  
  <pre><code>demos -&gt; directory for demos of jquery-mobile
  images -&gt; directory of images 
  index.html -&gt; index for demos
  jquery.mobile-1.3.1.css -&gt; Uncompressed with Default theme
  jquery.mobile-1.3.1.js -&gt; Uncompressed
  jquery.mobile-1.3.1.min.css -&gt; Minified with Default theme
  jquery.mobile-1.3.1.min.js -&gt; Minified
  jquery.mobile-1.3.1.min.map -&gt; ?? (what it is for? is it necessary for min version?)
  jquery.mobile.structure-1.3.1.css -&gt; Uncompressed structure without a theme
  jquery.mobile.structure-1.3.1.min.css -&gt; Minified structure without a theme
  jquery.mobile.theme-1.3.1.css -&gt; Uncompressed theme for structure without theme (can be changed by another theme)
  jquery.mobile.theme-1.3.1.min.css -&gt; Minified theme for structure without theme (can be changed by another theme)
  </code></pre>
  
  <p>As you can see i dont know the purpose of jquery.mobile-1.3.1.min.map, what it is for? is it necessary for min version?</p>