add test example (commented out) of overloading a geometry builder in the stylesheet
add test example (commented out) of overloading a geometry builder in the stylesheet

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