Changed tube example to use TorusKnot geometry
Changed tube example to use TorusKnot geometry

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