Fixed errors in the readme
Fixed errors in the readme

adrian-castravete/amber,matthias-springer/amber-athens,matthias-springer/amber-athens,adrian-castravete/amber,amber-smalltalk/amber,amber-smalltalk/amber,matthias-springer/amber-athens,rbistolfi/Amber-Todo,adrian-castravete/amber,rbistolfi/Amber-Todo,amber-smalltalk/amber