Added shared context example
Added shared context example

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