title: How to allow only one line break with Laravel
body: <p>I'm using Laravel 5.2, but i have problem with line breaks when someone post ($post->content) an article, i want to allow him to make just one line break after a paragraph.</p>
  
  <p>problem:</p>
  
  <pre><code>[line break]
  [line break]
  [line break]
  Some text
  [line break]
  [line break]
  some some text
  </code></pre>
  
  <p>i want to make it:</p>
  
  <pre><code>Some text
  [line break]
  some some text
  </code></pre>