title: how do I get a default date+time entry in my formtastic form
body: <p>I hope you can help me. Many thanks.
  I want to get a default value for both inputs.  </p>
  
  <pre><code>&lt;% semantic_form_for @post do |form| %&gt;  
    &lt;% form.inputs do %&gt;   
      &lt;%= form.input :date %&gt;  
      &lt;%= form.input :time,  :hint =&gt; 'enter time'  %&gt;
  </code></pre>
  
  <p><code>:start_year</code> or <code>:default</code> doesn't work here.</p>