Update README.markdown
Update README.markdown

added milestone 5 and documentation action to milestone 3
FreeRidePGH/BikeBinder,FreeRidePGH/freeride2,FreeRidePGH/BikeBinder,FreeRidePGH/BikeBinder,FreeRidePGH/BikeBinder,FreeRidePGH/freeride2,FreeRidePGH/freeride1,FreeRidePGH/freeride1