Create README.md
Merge branch 'master' of github.com:rwilhoit/Checkers into develop
Merge branch 'develop' of github.com:rwilhoit/Checkers into develop
Merge branch 'develop' of github.com:rwilhoit/Checkers into develop
Merge branch 'develop' of github.com:rwilhoit/Checkers into develop
Added heuristics for 20-25
Merge pull request #4 from rwilhoit/feature/heuristic_21

Feature/heuristic 21