title: Add keyword to javascript-mode in emacs
body: <p>I want to add, in my <code>.emacs</code> and new keyword for <code>.js</code> files in order the syntax highlighting highlights the word <code>self</code> with same font and color as <code>this</code>, because in my <code>.js</code> files I make use of the <code>self</code> trick to avoid context issues:</p>
  
  <pre><code>var self = this;
  </code></pre>
  
  <p>So, I want to see <code>self</code> for fast "visual" access as if it were <code>this</code> for <code>js-mode</code> (or <code>javascript-mode</code>, I'm not sure what I'm currently using by default).</p>
  
  <p>What must I add to my <code>.emacs</code> to get that changes? </p>