Fix #91 by allowing multiple buffers per webgl object
Fix #91 by allowing multiple buffers per webgl object

hirosuke999/three.dart,brason/three.dart,james-storey/three.dart,hirosuke999/three.dart,threeDart/three.dart,brason/three.dart,hirosuke999/three.dart,brason/three.dart,threeDart/three.dart,threeDart/three.dart,james-storey/three.dart