title: how to display content with raw html
body: <p><code>@post.body</code> has following content (which is converted from Markdown by using RDiscount).How should I render it to the user in what it means? i.e I want to render it as <strong>strong text</strong> <em>emphasized text</em>...</p>
  
  <pre><code>&lt;p&gt;&lt;strong&gt;strong text&lt;/strong&gt; &lt;/p&gt; &lt;p&gt;&lt;em&gt;emphasized text&lt;/em&gt; &lt;/p&gt; &lt;blockquote&gt;  &lt;p&gt;this is a quote&lt;/p&gt; &lt;/blockquote&gt;&lt;p&gt;&lt;img src="http://www.picturehouse.com/titles/images/rock.jpg" alt="alt text" title="" /&gt; &lt;/p&gt; 
  </code></pre>
  
  <p>Using <code>&lt;%= @post.body =&gt;</code> will only display it as the text shown above.</p>