title: Unset Session Variables on Meteor.js Hot Code Reload
body: <p>How do you unset a Session variable when a hot code reload occurs?</p>
  
  <p>I have the following subscription code and wants to perform <code>Session.set('score', '')</code> on a hot code reload.</p>
  
  <pre><code>Deps.autorun( function() {
      Meteor.subscribe('score', Meteor.userId(), function() {
          Session.set('score', new Date().getTime())
      })
  })
  </code></pre>