demo: update scene def for new camera & light params
demo: update scene def for new camera & light params

DHaylock/tangram,TitoAgudelo/tangram,xvilan/tangram,rosamcgee/tangram,tangrams/tangram,taylorhxu/tangram,TitoAgudelo/tangram,taylorhxu/tangram,xvilan/tangram,xvilan/tangram,ceseale/tangram,zerebubuth/tangram,DHaylock/tangram,DHaylock/tangram,tangrams/tangram,taylorhxu/tangram,zerebubuth/tangram,rosamcgee/tangram,TitoAgudelo/tangram,ceseale/tangram,zerebubuth/tangram,ceseale/tangram,rosamcgee/tangram