title: Timezone Select List in Ruby by UTC Offset
body: <p>I would like to have a select listed by offset difference to UTC, like:</p>
  
  <pre><code>&lt;select value=1&gt;(GMT 00:00) GMT&lt;/select&gt;
  &lt;select value=1&gt;(GMT 00:00) Lisbon&lt;/select&gt;
  &lt;select value=1&gt;(GMT +00:01) Madrid&lt;/select&gt;
  </code></pre>
  
  <p>Just like in Rails:
  <a href="https://signup.37signals.com/highrise/Free/signup/new" rel="nofollow">https://signup.37signals.com/highrise/Free/signup/new</a></p>
  
  <p>We're using Sinatra+Padrino.</p>