title: How do I add 1 day to an NSDate?
body: <p>Basically, as the title says. I'm wondering how I could add 1 day to an <code>NSDate</code>.</p>
  
  <p>So if it were:</p>
  
  <pre><code>21st February 2011
  </code></pre>
  
  <p>It would become:</p>
  
  <pre><code>22nd February 2011
  </code></pre>
  
  <p>Or if it were:</p>
  
  <pre><code>31st December 2011
  </code></pre>
  
  <p>It would become:</p>
  
  <pre><code>1st January 2012.
  </code></pre>