- Removed "NSString+RUMutableURLRequest.h"
 - Added "NSString+RUEncodedUrl".
 - Moved NSURL categories to their own folder.
RUSlideMenuNavigationController: added optional method 'ru_slideNavigationController_willDisplayMenuType:' to RUSlideNavigationController_DisplayDelegate.
Merge branch 'development' of https://github.com/Resplendent/ResplendentUtilities into development