title: Laravel 4.2 Date Validation
body: <p>How do I validate a date in such a way that it only accepts today and any date older than today? I know <code>before:today</code> accepts older dates while <code>after:today</code> accepts dates starting tomorrow on-wards. </p>
  
  <pre><code> $rules = [
      'start_at'      =&gt; 'required|date|date_format:Y-m-d|after:yesterday',
      'end_at'        =&gt; 'required|date|date_format:Y-m-d|after:start_at',
  ];
  </code></pre>
  
  <p>I want to be able to start a task today and end today.</p>