title: HTML code inside buttons with simple_form
body: <p>I'm new to rails, and just found the simple_form gem.
  I installed it with bootstrap suport, but now I can't get this code to work the way I want it</p>
  
  <pre><code>&lt;%= f.button :submit, "&lt;i class='icon-ok icon-white'&gt;&lt;/i&gt; Save", class: "btn btn-primary" %&gt;
  </code></pre>
  
  <p>I just want to put the icon inside the button, but when I do this, it shows me a button with the text '&lt;i class='icon-ok icon-white'&gt;&lt;/i&gt; Save'</p>
  
  <p>I also tried to do</p>
  
  <pre><code>&lt;%= f.button :submit, class: "btn btn-primary" do %&gt;&lt;i class="icon-ok icon-white"&gt;&lt;/i&gt; Save&lt;% end %&gt;
  </code></pre>
  
  <p>But with no success. How can I add some HTML inside the button with simple_form gem?</p>