Added missed cube.py example
Added missed cube.py example

jdreaver/vispy,Eric89GXL/vispy,ghisvail/vispy,bollu/vispy,sh4wn/vispy,dchilds7/Deysha-Star-Formation,hronoses/vispy,michaelaye/vispy,michaelaye/vispy,jay3sh/vispy,jay3sh/vispy,jay3sh/vispy,RebeccaWPerry/vispy,ghisvail/vispy,drufat/vispy,inclement/vispy,dchilds7/Deysha-Star-Formation,inclement/vispy,srinathv/vispy,jdreaver/vispy,kkuunnddaannkk/vispy,QuLogic/vispy,inclement/vispy,jdreaver/vispy,sbtlaarzc/vispy,srinathv/vispy,RebeccaWPerry/vispy,srinathv/vispy,QuLogic/vispy,RebeccaWPerry/vispy,drufat/vispy,kkuunnddaannkk/vispy,drufat/vispy,julienr/vispy,julienr/vispy,ghisvail/vispy,bollu/vispy,sbtlaarzc/vispy,Eric89GXL/vispy,sbtlaarzc/vispy,kkuunnddaannkk/vispy,Eric89GXL/vispy,QuLogic/vispy,hronoses/vispy,sh4wn/vispy,michaelaye/vispy,hronoses/vispy,julienr/vispy,bollu/vispy,dchilds7/Deysha-Star-Formation,sh4wn/vispy