Added RUStatusBarBackgroundNavigationController, UINavigationController+RUColoredNavigationBar, and RUStatusBarBackgroundNavigationController+RUColoredNavigationBar.
 - Added imports.
 - Added methods to navigation controller categories for custom colored navigation bar class.
Added email validation.
RUStatusBarBackgroundNavigationController: Updated init method name.
Merge branch 'development' of https://github.com/Resplendent/ResplendentUtilities into development
Fix to UINavigationController+RUColoredNavigationBar.
Added UIImage+RULaunchImage.
Added RUCollectionViewFlowLayout_ContentSizeAdjustForMinimumLineSpacing.