everything except +appearanceWhenContainedIn: figured out
switching CKRefreshControl reference to UIRefreshControl when calling +appearanceWhenContainedIn: - must be consistent with class reference for the refreshControl in the contained classes
relocating commonInit method
we actually don't even need to bother setting the paragraphStyle for NSAttributedString since NSParagraphStyle is not used by CKRefreshControl's attributedTitle
removing _isMasquerading variable
improve interoperability of CKRefreshControl and UIRefreshControl
improved interoperability between CKRefreshControl and UIRefreshControl