how could I pass swift custom component's properties from js world

hey I follow your [blog tutorial](http://browniefed.com/blog/2015/11/28/react-native-how-to-bridge-a-swift-view/) and try to call native custom component in swift source, but I have no idea to get custom property in my swift logic, would you mind have a look [here](http://stackoverflow.com/questions/35652660/how-could-i-pass-swift-custom-components-properties-from-js-world)

thanks for your time.
