title: Set expire time in lumen jwt token
body: <p>I create an authentication api with jwt and Lumen.</p>
  
  <p>I use <code>tymondesigns/jwt-auth</code> package in my Lumen project for authentication. In project when users logon I want to expire user token after 1 month.</p>
  
  <p>Now how can i fix it?</p>