title: How to show hidden files (dotfiles) with windows powershell
body: <p>When I have hidden files, like <em>dotfiles</em> or a <code>.git</code> directory: 
  How can I list those files and directories in Powershell?</p>
  
  <p>Neither <code>Get-ChildItem</code>, <code>dir</code> nor <code>ls</code> seem to show them.</p>