title: How can I word wrap with NSMutableAttributedString?
body: <pre><code>NSArray *myArray = @[@"1st:array1", 
                       @"2nd:array2", 
                       @"3rd:array3"
                      ];
  NSString *labelString = [myArray componentsJoinedByString:@"\n"];
  </code></pre>
  
  <p>In this code<code>labelString</code>can be word wrapped.<br/>
  But if use NSMutableAttributedString like this<br/></p>
  
  <pre><code>NSAttributedString *resultString = [resultArray componentsJoinedByString:@"\n"];
  </code></pre>
  
  <p>it can't be joined by @"\n". Any other method is existed? Thanks.</p>