title: Rails simple_form label for select
body: <p>I'm trying to set a label for the following line but I keep getting an error if I add label_method anywhere. label: is just ignored. How can I add a label for f.select?</p>
  
  <pre><code>&lt;%= f.select :state_identifier, Location::STATE, { prompt: 'State', id: 'state' } %&gt;
  </code></pre>
  
  <p>I tried the following but it doesn't format properly in form-horizontal, leaving no gap between the label and data.</p>
  
  <pre><code>&lt;%= f.label :state_identifier, label: 'State' %&gt;
  </code></pre>