title: Split XML file based on string
body: <p>i've mixed up some xml files and now have something like</p>
  
  <pre><code>&lt;Schema&gt;
  stuff
  &lt;/Schema&gt;&lt;Schema&gt;
  stuff
  &lt;/Schema&gt;&lt;Schema&gt;
  ..
  </code></pre>
  
  <p>i need to split them all so to have from <code>&lt;Schema&gt;</code> to <code>&lt;/Schema&gt;</code> in each file</p>