Fix license command --json and --xml arguments usage

[bacali95]

closes #77

[thevpc]

could you use

getSession().out().printf(licenseString)
or
getSession().out().printlnf(licenseString)

instead of

getSession().formats().object(licenseString).println()

Besides, did you check why you needed to do configure(false, args). Normally the session is already reading the '--xml' in getSession().configureLast(commandLine)

[bacali95]

I think since the license command does not have any extra arguments so we don't need the configure(false, args) again, correct?

[thevpc]

right!