title: Removing new line characters from NSString
body: <p>I have a <code>NSString</code> like this:</p>
  
  <pre><code>Hello 
  World
  of
  Twitter
  Lets See this
  &gt;
  </code></pre>
  
  <p>I want to transform it to: </p>
  
  <blockquote>
    <p>Hello World of Twitter Lets See this ></p>
  </blockquote>
  
  <p>How can I do this? I'm using Objective-C on an iPhone.</p>