title: Can't start designed pyQt application
body: <p>I have just designed my application inside pyQt Designer 5, generated my main.ui to main.py and my assets.qrc to assets_rc.py. No errors, when I now run main.py from my terminal nothing happends. Have I missed a step? Am I supposed to edit my main.py file now?</p>
  
  <p>Cheers!</p>
  
  <p>Python 3.3.0
  pyQT 5</p>