Added Gray-Scott reaction diffusion demo
Added Gray-Scott reaction diffusion demo

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