Add note on use cases.
Add note on use cases.

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@503 ead46cd0-7350-4e37-8683-fc4c6f79bf00

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