title: Setting SHIFT+arrow keys to select text in emacs prelude
body: <p>In emacs prelude I want SHIFT+arrow to select text. By default SHIFT+arrow is assigned to windmove. I've created a windmove.el file in my personal/preload folder with the following contents</p>
  
  <pre><code>(windmove-default-keybindings 's)
  </code></pre>
  
  <p>But with this both shift and command key are bound to windmove.</p>
  
  <p>How can I bind only command key?</p>