Updated streamlines segmentation tutorial so it uses QB2.
Updated streamlines segmentation tutorial so it uses QB2.

sinkpoint/dipy,oesteban/dipy,jyeatman/dipy,FrancoisRheaultUS/dipy,villalonreina/dipy,nilgoyyou/dipy,nilgoyyou/dipy,mdesco/dipy,jyeatman/dipy,matthieudumont/dipy,rfdougherty/dipy,sinkpoint/dipy,JohnGriffiths/dipy,StongeEtienne/dipy,beni55/dipy,villalonreina/dipy,Messaoud-Boudjada/dipy,FrancoisRheaultUS/dipy,JohnGriffiths/dipy,rfdougherty/dipy,demianw/dipy,Messaoud-Boudjada/dipy,matthieudumont/dipy,mdesco/dipy,StongeEtienne/dipy,oesteban/dipy,demianw/dipy,beni55/dipy