Added QuickBundles examples in docstring
Added QuickBundles examples in docstring

oesteban/dipy,FrancoisRheaultUS/dipy,rfdougherty/dipy,sinkpoint/dipy,JohnGriffiths/dipy,matthieudumont/dipy,StongeEtienne/dipy,jyeatman/dipy,FrancoisRheaultUS/dipy,sinkpoint/dipy,JohnGriffiths/dipy,demianw/dipy,villalonreina/dipy,StongeEtienne/dipy,nilgoyyou/dipy,matthieudumont/dipy,jyeatman/dipy,nilgoyyou/dipy,oesteban/dipy,rfdougherty/dipy,demianw/dipy,villalonreina/dipy