Fixing typo in readme and adding example for 'Require user'
don't break authn where AuthType != Persona (fixes #24)

Try to not to spew debug in the non-Persona case, either.
Merge pull request #21 from gene1wood/master

fix typo in README, add example for 'Require user'
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into gozer

Conflicts:
	src/mod_authn_persona.c