title: Cocos2D: Create sprite from a file in documents directory
body: <p>What is the best way to create instance of CCSprite from downloaded image file?</p>
  
  <p>I would like to implement downloadable additional contents in my Cocos2D game.</p>
  
  <p>The way I used is</p>
  
  <ol>
  <li>Create UImage from a downloaded image.</li>
  <li>Create CCTexture2D from UIImage.</li>
  <li>Create CCSprite from CCTexture2D.</li>
  </ol>
  
  <p>If you know more smart way, please let me know.</p>