Add selection callback and chart members.
Add selection callback and chart members.

HumbleSoftware/envisionjs,bigspotteddog/envisionjs,notepad104/envisionjs,RobertoMalatesta/envisionjs,notepad104/envisionjs,bigspotteddog/envisionjs,HumbleSoftware/envisionjs,notepad104/envisionjs,RobertoMalatesta/envisionjs,RobertoMalatesta/envisionjs