add test for niu.Split
add test for niu.Split

wanderine/nipype,carolFrohlich/nipype,mick-d/nipype,Leoniela/nipype,FCP-INDI/nipype,iglpdc/nipype,sgiavasis/nipype,sgiavasis/nipype,carolFrohlich/nipype,dgellis90/nipype,wanderine/nipype,glatard/nipype,carolFrohlich/nipype,pearsonlab/nipype,wanderine/nipype,Leoniela/nipype,dgellis90/nipype,gerddie/nipype,carolFrohlich/nipype,grlee77/nipype,grlee77/nipype,glatard/nipype,glatard/nipype,gerddie/nipype,iglpdc/nipype,pearsonlab/nipype,JohnGriffiths/nipype,arokem/nipype,pearsonlab/nipype,arokem/nipype,JohnGriffiths/nipype,blakedewey/nipype,FCP-INDI/nipype,gerddie/nipype,sgiavasis/nipype,iglpdc/nipype,arokem/nipype,blakedewey/nipype,JohnGriffiths/nipype,gerddie/nipype,FCP-INDI/nipype,blakedewey/nipype,dgellis90/nipype,JohnGriffiths/nipype,sgiavasis/nipype,grlee77/nipype,glatard/nipype,mick-d/nipype,grlee77/nipype,wanderine/nipype,Leoniela/nipype,FCP-INDI/nipype,mick-d/nipype,arokem/nipype,iglpdc/nipype,mick-d/nipype,pearsonlab/nipype,dgellis90/nipype,blakedewey/nipype