title: Problems with .ccb file for sprite in SpriteBuilder
body: <p>I am trying to understand SpriteBuilder. I made a new file <code>hero.ccb</code> for sprite and set it's sprite frame to the image I need. When I go back to the MainScene and drag <code>hero.ccb</code> from the left menu,there is just a CCBFile without anything(no sprite image). What am I doing wrong? </p>