[initial commit] added new files
[license] updated license file
[enhancement] still need a lot of cleaning and improvments but on a good track!
[enhancement] added computer move to the strategy evaluation
[fix] fixed issues in the computation of minimax
[enhancement] credit-based exploration
[enhancement] refactoring - split code in different files
[test] added unit tests
[cleaning] example + remove useless code
[doc] added explaination in the source code how what is the logic behind this piece of code
[oops] some leftover
[cleaning] more text - mainly