Update README.md

For now I'm just doing basic edits and haven't started to edit the game itself.
Game originated in "https://github.com/fbsamples/web-friend-smash-v2", and 
will be re-purposed and changed to fit our needs for Project "SharityCoins".
Different Facebook games will be developed as open source to benefit Charity-
Organizations and Important global causes with  easy access to our donation
system.