How to hide splash screen in IONIC 2?

I am designing an app using ionic 2. I want to hide splash screen in my app. I have added this line in the config file. Splash screen is not shown up after adding this line. But i could see the white screen in my app. How to avoid white screen?

   <preference name="ShowSplashScreen" value="false" />
  <preference name="SplashScreen" value="none" />