Add multiple viewport example
Add multiple viewport example

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