Added shuffle() example.
Added shuffle() example.

goktugyil/EZSwiftExtensions,Daniel-Lopez/EZSwiftExtensions,kirakik/EZSwiftExtensions,piv199/EZSwiftExtensions,Daniel-Lopez/EZSwiftExtensions,goktugyil/EZSwiftExtensions,astrokin/EZSwiftExtensions,astrokin/EZSwiftExtensions,piv199/EZSwiftExtensions,kirakik/EZSwiftExtensions