Added description in Readme file.
Added description in Readme file.

kirakik/EZSwiftExtensions,piv199/EZSwiftExtensions,goktugyil/EZSwiftExtensions,astrokin/EZSwiftExtensions,goktugyil/EZSwiftExtensions,piv199/EZSwiftExtensions,kirakik/EZSwiftExtensions,astrokin/EZSwiftExtensions