title: Add 2 lines of text on Navigation Bar in IOS using TitleView
body: <p>I have to add two lines of text with different font sizes on Navigation Bar using Title View.</p>
  
  <p>I have tried the following code:</p>
  
  <p>I want EREDITOMETRO as bold with large font and LA SUCCESSIONE A PORTATA DI MANO with small font</p>
  
  <pre><code>UILabel * label =[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 480, 44)]; label.backgroundColor =[UIColor clearColor]; 
  label.numberOfLines =2; 
  label.font =[UIFont boldSystemFontOfSize:9.0f];
  label.textColor =[UIColor whiteColor]; 
  label.text = @"EREDITOMETRO \n LA SUCCESSIONE A PORTATA DI MANO"; 
  
  self.navigationItem.titleView = label;
  </code></pre>