title: How to map "jj" to Esc in emacs Evil mode
body: <p>Recently I tried Emacs and found Evil helpful to keep my vim custom. I'm used to typing "jj" to return normal mode from insert mode like many Vimers do but don't know how to make it in Evil mode.</p>
  
  <p>I map it like this but seems not correct:</p>
  
  <pre><code>(define-key evil-insert-state-map (kbd "jj") 'evil-normal-state)
  </code></pre>