BF: fixed the example to make it work in all circumstances
BF: fixed the example to make it work in all circumstances

nipy/nireg,alexis-roche/register,alexis-roche/nipy,alexis-roche/niseg,bthirion/nipy,bthirion/nipy,nipy/nipy-labs,bthirion/nipy,alexis-roche/nireg,alexis-roche/nipy,bthirion/nipy,alexis-roche/nireg,alexis-roche/register,alexis-roche/register,alexis-roche/niseg,nipy/nipy-labs,arokem/nipy,arokem/nipy,alexis-roche/nipy,arokem/nipy,alexis-roche/nipy,nipy/nireg,arokem/nipy