fixed syntax error in travis file
fixed syntax error in travis file

sgiavasis/nipype,sgiavasis/nipype,sgiavasis/nipype,carolFrohlich/nipype,FCP-INDI/nipype,mick-d/nipype,FCP-INDI/nipype,carolFrohlich/nipype,FCP-INDI/nipype,mick-d/nipype,carolFrohlich/nipype,mick-d/nipype,FCP-INDI/nipype,carolFrohlich/nipype,mick-d/nipype,sgiavasis/nipype