title: Why should spring postOnly be false for Logout to work?
body: <p>what does postOnly mean in below property</p>
  
  <pre><code>grails.plugin.springsecurity.logout.postOnly=false? 
  </code></pre>
  
  <p>Why should it be false for Logout to work? Tried making the logout feature work by making it true. But it did not work. What is the reason behind making it false?</p>