title: Having hierarchical groups in ini file for QSettings
body: <p>I am using QSettings to make changes in my GUI.
  Currently I have understood how to use QSetting for basic key=value pairs.</p>
  
  <pre><code>[button]
    enable = 1
  </code></pre>
  
  <p>But I want to have hierarchical groups. Something like below</p>
  
  <pre><code>[user1]
    [button1]
       enable = 1
    [button2]
      enable = 0
  [user2]
    [button1]
      enable = 1
    [button2]
      enable = 0
  </code></pre>
  
  <p>Is there any way to do this?</p>
  
  <p>Thank You :)</p>