Added Marathon by @JohnSundell
Added Marathon by @JohnSundell

Just discovered during his speech at #Appbuilders17
fnoah/awesome-swift,vadymmarkov/awesome-swift,kingiol/awesome-swift,neoneye/awesome-swift,marmelroy/awesome-swift,kingiol/awesome-swift,fnoah/awesome-swift,neoneye/awesome-swift,marmelroy/awesome-swift,zenangst/awesome-swift,kingiol/awesome-swift,timothydang/awesome-swift,fnoah/awesome-swift,fnoah/awesome-swift,marmelroy/awesome-swift,timothydang/awesome-swift,neoneye/awesome-swift,zenangst/awesome-swift,neoneye/awesome-swift,matteocrippa/awesome-swift,vadymmarkov/awesome-swift,vadymmarkov/awesome-swift,marmelroy/awesome-swift,vadymmarkov/awesome-swift,zenangst/awesome-swift,timothydang/awesome-swift,kingiol/awesome-swift,zenangst/awesome-swift