Updated README: links, equality check, two-way mapping, license
Updated README: links, equality check, two-way mapping, license

waynett/Block-KVO,blairmitchelmore/Block-KVO,Tricertops/Block-KVO,waynett/Block-KVO,Tricertops/Block-KVO,iMartinKiss/Block-KVO,blairmitchelmore/Block-KVO,waynett/Block-KVO,iMartinKiss/Block-KVO,blairmitchelmore/Block-KVO