Added note in map docstring.
Added note in map docstring.

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