Update: index.php, Delete: ServiceHelper.php

Update: README.md

Create: ServiceHelper.php

Update: index.php

Update: StandardDeviation.php

Update: StandardDeviation.php, Delete: generate_data.php

Update: StandardDeviationVoter.php

Create: index.php, generate_data.php, StandardDeviationVoter.php

Create: LICENSE

Create: LICENSE

Delete screenshots folder

Create: tiles.png

Create: tetris.png

Create: battleship.png

Update: README.md

update: README.md

update: README.md

create: list.png, help.png, echo.png

update: README.md