[wp] plugin must be autoloaded for AutoHideSplashScreen preference to work
[wp] implemented OnInit so splash screen can be shown before cordova page is loaded
[wp8] updated quirk for  and combined iOS,WP8,BB10 quirks as they are all the same
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugin-splashscreen