title: How to reinstall IOS Simulator
body: <p>I have installed xCode 6.1.1 (latest update) with the Mac OS X 10.10 Seed 2 (10.10.2)</p>
  
  <p>When i run my IOS app on any simulator type (5,5S, 6 and etc.),
  I have a black flashing on the IOS Simulator.</p>
  
  <p>I want to try Remove the simulator and reinstall it again.</p>
  
  <p>How can i do that?</p>
  
  <p>Thanks.</p>