Overwrite UIWindows's standard rootViewController getter for iOS 7 status bar handling
Merge pull request #78 from scheinem/master

Overwrite UIWindows's standard rootViewController getter for iOS 7 status bar handling
Fix rootViewController by using appDelegate.window instead of keyWindow.
Merge pull request #79 from inamiy/fix-78

Fix rootViewController by using appDelegate.window instead of keyWindow.
Adding compatibility with the UIStatusBarStyleLightContent style.