added colorbar widget file
added colorbar widget file

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