Added SwiftSortedList (#761)
Added SwiftSortedList (#761)

SwiftSortedList is a sorted list implementation written in Swift. 
It uses the `Comparable` protocol to keep the implementation generic.
[ci skip]
arasu01/awesome-ios,Yogesh-MV/awesome-ios,ufosky-mobile/awesome-ios,Yogesh-MV/awesome-ios,vsouza/awesome-ios