title: how to split sentence and get specific nsstring
body: <p>I want one sentence in <code>NSString</code> object like this:</p>
  
  <pre><code>NSString *myWords = @"Hi,I'm Janatan! I love objective C!!!";
  </code></pre>
  
  <p>I want split this sentence to more part for example :</p>
  
  <p><strong>first part : Hi</strong></p>
  
  <p><strong>second part : I'm Janatan</strong></p>
  
  <p><strong>third part : I love objective C</strong></p>
  
  <p>I want do this with loop but I don't know how to do it. I want split words until arrive to signs (! , ? . and etc)</p>
  
  <p>please guide me about that.</p>