update readme accordingly
update readme accordingly

joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle,joshhartigan/semicircle