added features section to the README
added features section to the README

OpenDAWN/Sporth,PaulBatchelor/Sporth,OpenDAWN/Sporth,PaulBatchelor/Sporth,aure/Sporth,PaulBatchelor/Sporth,OpenDAWN/Sporth,PaulBatchelor/Sporth,aure/Sporth,aure/Sporth,aure/Sporth,aure/Sporth,PaulBatchelor/Sporth