TIC TAC TOE SERVER

A server that plays tic tac toe or Noughts and Crosses build with python (using flask).

1. Follows the strategy highlighted on [Wikipedia] (https://en.wikipedia.org/wiki/Tic-tac-toe)
2. Server plays O; order doesn't matter so it can play first or second.
3. Board is passed as a url encoded sting in this format (xo++++++o) where the '+' is for empty squares.
   Example call is http://localhost:5000/?board=xo++++++o
4. Returns the board in the same format with 'o' played if possible.
5. Server plays to win if possible and should be able to avoid defeat.