Flatten imports in JoinNode example.
Flatten imports in JoinNode example.

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